Commercial or technical designation of a manufacturer's product family sharing a common design and compatible characteristics.

Range of tasks and systems for which the manufacturer recommends the component.

Primary function of the device and its intended use as defined by its design and the manufacturer's documentation.

Permissible installation location of the product: indoors, outdoors, in a technical area, or as part of equipment.

Environmental conditions under which installation and operation of the product are permitted.

Permissible spatial orientation of the component during installation and operation.

External horizontal dimension of the product between its outermost lateral points.

External vertical dimension of the product from its lowest to its highest point.

External distance between the foremost and rearmost surfaces of the product.

Number of available digital inputs of the product.

Number of available digital outputs of the product.

Number of independent relay outputs or sets of switching contacts provided by the product.

Number of integrated analog outputs provided by the product.

Number of integrated analogue input channels.

Number of digital inputs supporting manufacturer-declared high-speed pulse or counter operation.

Number of independently usable high-speed counter functions or channels.

Number of outputs capable of generating manufacturer-declared high-speed pulse signals.

Number of integrated physical Ethernet communication ports.

Number of integrated physical RS-485 communication interfaces.

Number of integrated physical USB ports provided by the product, including charging, data, communication or programming ports.

Number of independently usable monitoring, switching or alarm thresholds provided by the device.

Number of dedicated inputs capable of receiving pulse signals for counting, metering or accumulation.

Maximum pulse count that can be accumulated by the corresponding internal counter before rollover or reset.

Maximum number of independent user-defined calculation expressions or calculated quantities.

Maximum number of virtual channels available for derived, aggregated or user-calculated measurement quantities.

Primary material from which the product is manufactured.

Grade, alloy, class, or technical designation of the product's primary material.

Primary visually perceived colour of the product's external surface.

Designation of the product's primary surface colour according to the RAL colour system.

Installation arrangement permitted by the product design, such as wall-mounted, flush-mounted, floor-mounted, or another specified mounting type.

Method used to mechanically secure the product to a support, surface, or load-bearing structure.

Type of electrical current for which the product's main supply circuit is intended.

Voltage value assigned to the product by the manufacturer for specified application conditions and characteristics.

AC frequency assigned to the product for normal operating conditions.

Indicates whether current unbalance measurement or calculation is supported.

Lower limit of the electrical network or signal frequency at which product operation is permitted.

Upper limit of the electrical network or signal frequency at which product operation is permitted.

Indicates whether voltage unbalance measurement or calculation is supported.

Number of phases of the electrical system for which the product is designed to be connected or used.

Indicates whether integrated power-quality monitoring is provided beyond basic voltage, current, power, and energy measurement.

Rated external auxiliary supply voltage required for the product's active functions.

Type of current and source used for the product's auxiliary supply.

Voltage with reference to which the product's insulation clearances and dielectric properties are specified.

Peak value of an impulse voltage of specified waveform that the product insulation must withstand without breakdown.

Test voltage applied to verify the dielectric strength of the product insulation.

Minimum permissible insulation resistance between the specified electrically separated parts.

Category characterizing the expected level of impulse overvoltages at the product's point of use.

Degree of pollution of the surrounding microenvironment considered when selecting insulation distances and product characteristics.

Type of electrical insulation used, considered in terms of its protective function and construction.

Indicates whether the product can measure and provide electrical voltage values.

Indicates whether the product can measure and provide electrical current values.

Indicates whether the product can measure and provide electrical network frequency values.

Indicates whether measurement of active, reactive, or apparent electrical power is supported.

Indicates whether measurement or cumulative metering of electrical energy is supported.

Indicates whether measurement or analysis of harmonic components of electrical quantities is supported.

Types of analog signals supported by the product outputs.

Analogue signal, sensor or resistance input types supported by the product.

Electrical measurement principle used for evaluation of the monitored signal, such as true RMS, RMS, average-value or direct-value measurement.

Indicates that the monitoring device derives its operating power directly from the measured circuit and does not require a separate auxiliary supply.

Minimum signal frequency accepted by the measuring circuit for the declared monitoring or measurement function.

Maximum signal frequency accepted by the measuring circuit for the declared monitoring or measurement function.

Manufacturer-declared accuracy of voltage measurement where expressed as a single percentage value.

Lowest voltage that can be measured or monitored within the manufacturer-declared measuring range.

Highest voltage that can be measured or monitored within the manufacturer-declared measuring range.

Electrical voltage relationships measured by the device, for example line-to-line or line-to-neutral.

Manufacturer-declared absolute accuracy of frequency measurement.

Lowest current that can be measured or monitored within the manufacturer-declared measuring range.

Highest current that can be measured or monitored within the manufacturer-declared measuring range.

Indicates that the measuring circuit supports connection through an external current transformer.

Indicates that the current transformer ratio used for measurement scaling can be configured in the device.

Minimum configurable primary current value used for current transformer scaling.

Maximum configurable primary current value used for current transformer scaling.

Standard secondary current ratings of external current transformers supported by the measuring input.

Indicates that active electrical power is measured or calculated by the device.

Manufacturer-declared relative accuracy of current measurement where expressed as a percentage.

Indicates that reactive electrical power is measured or calculated by the device.

Indicates that apparent electrical power is measured or calculated by the device.

Indicates that the electrical power factor is measured or calculated by the device.

Supported methods for connecting the monitored current to the measuring device.

Apparent-power burden presented by the measuring input to an external current transformer under manufacturer-declared conditions.

Indicates that current can be monitored using an external measuring shunt.

Minimum supported measuring voltage across an external current shunt. UI may display the value in mV.

Maximum supported measuring voltage across an external current shunt. UI may display the value in mV.

Defines whether electrical power is evaluated as a total system value, per phase, or both.

Electrical power quantities measured or calculated by the device.

Indicates that the device can distinguish the direction of active power flow.

Power-flow directions that can be measured or evaluated by the product.

Lower limit of the manufacturer-declared active-power measuring range.

Upper limit of the manufacturer-declared active-power measuring range.

Manufacturer-declared relative accuracy of active-power measurement.

Lower limit of the manufacturer-declared reactive-power measuring range.

Upper limit of the manufacturer-declared reactive-power measuring range.

Manufacturer-declared relative accuracy of reactive-power measurement.

Lower limit of the manufacturer-declared apparent-power measuring range.

Upper limit of the manufacturer-declared apparent-power measuring range.

Manufacturer-declared relative accuracy of apparent-power measurement.

Lower limit of the manufacturer-declared power-factor measuring range.

Upper limit of the manufacturer-declared power-factor measuring range.

Manufacturer-declared absolute accuracy of power-factor measurement expressed as a cos φ value difference.

Indicates that the device distinguishes inductive lagging and capacitive leading power-factor conditions.

Overall electrical measurement connection topology of the device, distinguishing direct measurement and operation through external current, voltage, shunt, Rogowski or sensor interfaces.

Supported methods for connecting the voltage measuring circuit, such as direct connection or connection through an external voltage transformer.

Indicates that the measuring device supports voltage measurement through an external voltage transformer.

Indicates that the voltage transformer ratio used for measurement scaling can be configured in the device.

Minimum configurable primary voltage value used for voltage-transformer measurement scaling.

Maximum configurable primary voltage value used for voltage-transformer measurement scaling.

Standard secondary voltage ratings of external voltage transformers supported by the measuring input.

Indicates that measured electrical quantities are available separately for individual phases.

Indicates that current in the neutral conductor can be measured independently.

Indicates that aggregate or total system values are calculated in addition to individual phase measurements.

Indicates that the phase angle between relevant voltage and/or current quantities can be measured or calculated.

Lower limit of the manufacturer-declared phase-angle measurement range.

Upper limit of the manufacturer-declared phase-angle measurement range.

Manufacturer-declared absolute accuracy of phase-angle measurement.

Indicates measurement or calculation of total harmonic distortion of voltage.

Upper limit of the manufacturer-declared voltage THD measurement range.

Manufacturer-declared accuracy of voltage total harmonic distortion measurement.

Indicates measurement or calculation of total harmonic distortion of current.

Upper limit of the manufacturer-declared current THD measurement range.

Manufacturer-declared accuracy of current total harmonic distortion measurement.

Indicates that individual voltage harmonic components can be measured or analysed.

Indicates that individual current harmonic components can be measured or analysed.

Highest individual voltage harmonic order available from the measurement or analysis function.

Highest individual current harmonic order available from the measurement or analysis function.

Indicates that individual harmonic magnitudes are available rather than only aggregate distortion values.

Indicates measurement or analysis of spectral components located between integer harmonic frequencies.

Manufacturer-declared accuracy of current-unbalance measurement or calculation.

Indicates measurement or calculation of positive-, negative- or zero-sequence electrical quantities.

Voltage symmetrical components available from the measurement system.

Current symmetrical components available from the measurement system.

Indicates that the voltage crest factor can be measured or calculated.

Indicates that the current crest factor can be measured or calculated.

Maximum voltage crest factor within the manufacturer-declared measurement capability.

Maximum current crest factor within the manufacturer-declared measurement capability.

Indicates measurement or calculation of total demand distortion of current.

Upper limit of the manufacturer-declared current total demand distortion measurement range.

Sampling rate used by the measuring system for acquisition of electrical signals.

Time interval between successive updates of measured or calculated values made available by the device.

Maximum accepted input pulse frequency under manufacturer-declared conditions.

Minimum pulse duration reliably recognized by the pulse input.

Input filtering or debounce time applied to pulse or contact signals.

Minimum accepted external voltage for a voltage-operated pulse input.

Maximum accepted external voltage for a voltage-operated pulse input.

Indicates galvanic isolation between the pulse-input circuit and the relevant internal device circuitry.

Minimum manufacturer-declared operating voltage of a digital input.

Maximum manufacturer-declared operating voltage of a digital input.

Maximum current drawn by or permitted at the digital input under declared conditions.

Lower limit of the manufacturer-declared independent neutral-conductor current measurement range.

Upper limit of the manufacturer-declared independent neutral-conductor current measurement range.

Manufacturer-declared accuracy of independent neutral-conductor current measurement.

Indicates measurement or calculation of displacement power factor based on the phase displacement of fundamental-frequency voltage and current.

Manufacturer-declared accuracy of displacement power factor measurement.

Degree of enclosure protection against access to hazardous parts and ingress of solid objects and water, designated by the IP code.

Class of enclosure resistance to external mechanical impacts designated by the IK code.

Method or level of protection of the user against direct contact with hazardous live parts.

Indicates whether the design prevents finger access to hazardous live parts in the intended condition.

Classification of a material according to its ability to ignite, sustain combustion, and cease burning under a specified test.

Temperature of the heated wire used when testing the material or product against an ignition source.

Indicates whether the product material is classified as halogen-free according to the characteristics declared by the manufacturer.

Minimum ambient temperature at which normal operation of the product is permitted.

Maximum ambient temperature at which normal operation of the product is permitted.

Maximum permissible average ambient temperature over a consecutive 24-hour period.

Minimum ambient temperature permitted during storage of the product while not in operation.

Maximum ambient temperature permitted during storage of the product while not in operation.

Minimum relative air humidity permitted for the declared operating or test condition.

Maximum relative air humidity permitted for the declared operating or test condition.

Temperature at which the corresponding relative humidity value is specified or standardized.

Indicates whether the permissible humidity value applies only to non-condensing conditions.

Maximum altitude above sea level at which the product may be installed without exceeding the declared conditions.

Indicates whether the permissible product load must be reduced as installation altitude increases.

Altitude above sea level above which the permissible product load must be reduced.

Indicates whether the product's resistance to vibration has been verified under the declared conditions.

Indicates whether the product's resistance to short-duration mechanical shocks has been verified.

Indicates whether a touchscreen is provided for user input through the local HMI.

Indicates whether a local human-machine interface (HMI) is provided for monitoring, configuration, or control.

Indicates whether the product has an integrated local display.

Technology or construction type of the product's integrated display.

Indicates whether the integrated display has a backlight.

Number of integrated LEDs used to indicate product status or operating modes.

Indicates whether documentation is included in the product's standard supply.

Indicates whether an installation manual is included with the product.

Number of integrated user keys or buttons available for local navigation, programming or control.

Indicates that current measured values can be shown on the integrated display.

Indicates that fault, warning or diagnostic messages can be shown on the local display.

Indicates that the display changes color or uses color coding to distinguish normal, warning, fault or configuration states.

Number of numeric digits that can be shown simultaneously on the primary numeric display field.

Number of simultaneously visible text or measurement lines on the integrated display.

Maximum number of alphanumeric characters displayed in one text line.

Horizontal pixel resolution of a graphical integrated display.

Vertical pixel resolution of a graphical integrated display.

Physical diagonal dimension of the integrated display viewing area.

Number of predefined or configurable local display pages available for measured values or device information.

Indicates that the device can automatically cycle through display pages or measured values.

Indicates that the currently displayed measured value can be held or frozen on the local display.

Indicates that the measurement unit associated with a displayed value is shown locally.

Indicates that local measured-value presentation identifies the associated phase or conductor.

Indicates whether the product stores or provides minimum and maximum values of measured quantities.

Indicates whether demand calculation or measurement is supported for specified electrical quantities.

Indicates whether the product can store an internal event log.

Maximum number of event records that can be stored in the product's internal log.

Indicates whether an integrated real-time clock is provided for timekeeping, event time-stamping, or time-based functions.

Indicates whether user-configurable functions can be assigned to one or more digital inputs.

Indicates whether user-configurable functions can be assigned to one or more digital outputs.

Indicates whether the product supports digital data exchange with external devices or systems.

List of supported digital data communication protocols.

List of supported physical or logical digital communication interfaces.

Indicates whether an integrated web server or web interface is provided for access to product functions.

Indicates whether specified product settings can be read or changed remotely through a supported communication interface.

Indicates whether diagnostic information, status data, or fault information can be obtained remotely.

Indicates whether one or more measured values can be stored, for example the latest, minimum, maximum, or a value associated with a fault event.

Functions permanently assigned or assignable to the product relay outputs.

Indicates that device firmware can be updated by a manufacturer-supported procedure.

Manufacturer-declared duration for which the real-time clock continues to retain valid time information without normal supply voltage.

Electrical or physical monitoring functions provided by the device, such as overvalue, undervalue, window, phase, frequency, current, power, insulation, temperature or level monitoring.

Indicates that device settings can be configured directly on the product using integrated controls or a local HMI.

Types of measured values that can be retained by the product, such as last, minimum, maximum or fault-associated values.

Indicates that stored events, warnings or faults can include a date and/or time stamp.

Indicates that measured-value trends or historical sequences can be stored, transmitted or evaluated.

Indicates that current measured values can be read by an external controller, software system or communication master.

Indicates whether a latched trip, fault, or alarm state can be reset remotely through a supported command or interface.

Indicates that an internal test or test function can be initiated remotely through a supported interface.

Indicates that warning, fault, status or diagnostic information can be transmitted through a supported digital communication interface.

Indicates that the internal clock can be synchronized from an external radio, satellite, network or other reference time source.

External reference systems supported for automatic clock synchronization.

Indicates that an external radio or satellite time-reference antenna can be connected to the product.

Indicates that local configuration access can be intentionally restricted against unauthorized changes.

Methods supported for restricting access to local device configuration.

Indicates that measured electrical values can be stored internally as historical measurement records.

Maximum number of historical measurement records retained internally.

Indicates that the interval between periodic measurement records can be configured.

Minimum configurable interval between periodically stored measurement records.

Maximum configurable interval between periodically stored measurement records.

Supported conditions or commands that initiate storage of measurement records.

Manufacturer-declared internal non-volatile memory capacity available for measurement history or logging.

Indicates that stored measurement or event history can be exported from the device.

File or interchange formats supported for exporting stored measurement data.

Indicates that alarm occurrences are stored in a dedicated alarm history or log.

Maximum number of alarm records retained in the dedicated alarm history.

Indicates that active or stored alarms can be explicitly acknowledged by the user or supervisory system.

Indicates that the stored maximum demand register can be reset using a manufacturer-supported procedure.

Indicates that stored minimum and maximum measured values can be reset.

Supported serial communication baud rates for interfaces such as RS-232, RS-422, RS-485 or equivalent serial buses.

Supported data-word lengths for serial communication.

Parity modes supported by the serial communication interface.

Supported number of stop bits in serial communication frames.

Indicates that the logical device or slave address used by a serial communication protocol can be configured.

Minimum configurable logical address on a supported serial communication network.

Maximum configurable logical address on a supported serial communication network.

Supported nominal Ethernet physical-layer link speeds.

Supported methods for assigning network-layer addresses to the Ethernet interface.

Indicates support for Internet Protocol version 6 communication.

Indicates that one or more integrated or optional wireless communication technologies are supported.

Wireless communication technologies supported by the product.

Cellular network technologies supported by the integrated or optional modem.

Physical or embedded SIM formats supported by a cellular communication module.

Indicates that an external antenna can be connected for wireless or cellular data communication.

Indicates that wireless or cellular signal-strength information is available locally or through communication.

Indicates that the device can provide communication access between another device or local bus and an upstream network.

Indicates that the device can translate or bridge application data between different supported communication protocols.

Indicates that measured or logged data can be transmitted automatically without an explicit polling request.

Indicates manufacturer-supported communication with a cloud or remote Internet service.

Indicates that measurement, status or configuration data can be accessed through a documented application programming interface.

Application programming interface types supported by the product or its integrated communication service.

Indicates that firmware can be updated through a supported local or remote data communication interface.

Indicates that loss or inactivity of a communication link can be detected by an internal communication watchdog.

Indicates that the timeout used to detect communication loss or inactivity can be configured.

Minimum configurable communication timeout.

Maximum configurable communication timeout.

Indicates that access to network, web, API or remote configuration functions can require authenticated user credentials.

Indicates support for encrypted data communication through one or more manufacturer-supported communication services.

Transport Layer Security protocol versions supported for protected network communication.

Indicates that user permissions can be differentiated by user role or authorization level.

Indicates that security-relevant events such as authentication failures or configuration access can be recorded.

Indicates that the device verifies the integrity or authenticity of executable firmware during startup.

Indicates that firmware update packages are cryptographically authenticated before installation.

Indicates that loss of an expected communication connection can generate a local or remote alarm or diagnostic condition.

Electrical pulse-input interfaces supported by the device.

Indicates that the engineering quantity represented by each received pulse can be configured.

Numeric scaling factor used to convert accumulated input pulses into the configured engineering quantity.

Engineering unit assigned to the configurable pulse-input scaling, for example kWh, kvarh, m3 or another manufacturer-supported unit.

Functions that can be assigned or are dedicated to integrated digital inputs.

Functions that can be assigned or are dedicated to integrated digital outputs.

Indicates that the correspondence between measured quantity and analogue output signal range can be configured.

Measured quantities that can be assigned to an analogue output channel.

Indicates that measured quantities can be averaged over a defined time interval, independently of the underlying electrical measurement principle.

Indicates that the time interval used for statistical averaging of measured values can be configured.

Minimum configurable time interval used for averaging measured values.

Maximum configurable time interval used for averaging measured values.

Indicates that stored minimum and maximum measured values include the time at which the extreme value occurred.

Indicates that the detected phase sequence or phase rotation direction can be presented locally or through communication.

Electrical quantities for which interval demand can be calculated or registered.

Demand calculation algorithms supported by the measuring device.

Indicates that a demand interval may be divided into shorter subintervals for rolling or sliding demand calculation.

Minimum configurable demand-calculation subinterval.

Maximum configurable demand-calculation subinterval.

Indicates calculation of a projected demand value before completion of the current demand interval.

Indicates that measured or calculated quantities can be compared with configured limits to generate alarms or status conditions.

Indicates that configured measurement alarms can be assigned to available relay, digital or equivalent outputs.

Indicates that the measuring device can detect manufacturer-defined wiring errors affecting its voltage or current measurement inputs.

Indicates that incorrect current-transformer polarity or reversed current measurement direction can be detected.

Indicates that an incorrect relationship between voltage and current phase channels can be detected.

Indicates explicit indication when an input or calculated measured quantity exceeds its valid measurement range.

Indicates explicit indication when an input or measured quantity is below its valid or usable measurement range.

Indicates that the condition of the battery, capacitor or other backup source used for the real-time clock can be monitored or diagnosed.

Indicates that the device can detect corruption or integrity failures affecting stored configuration, measurement or metrological data.

Indicates that measured energy consumption can be converted into an estimated monetary cost using user-configurable tariff information.

Indicates that measured energy consumption can be converted into an estimated carbon-dioxide emission quantity.

Indicates that the energy-to-CO2 conversion factor used for emissions calculation can be configured.

Indicates that the device allows user-defined mathematical calculations based on available measured or calculated quantities.

Regions or markets for which the manufacturer declares regulatory or certification compliance of the product.

Certification, market-approval, or conformity marks applicable to the product.

Primary normative document or standard according to which the manufacturer classifies or assesses the product.

Additional normative documents and standards declared by the manufacturer as applicable to the product.

Indicates whether an official declaration of conformity is available for the product.

Indicates whether a certificate relating to the declared certification or conformity of the product is available.

Identification number of the certificate relating to the product or its certified version.

Name of the organization that issued the certificate or performed the relevant conformity assessment.

Indicates whether the CE marking is applied to the product where applicable.

Indicates whether the EAC marking is applied to the product where applicable.

Indicates whether the cULus mark is applied to the product where applicable.

Indicates whether the product has a declared CSA certification or recognition status.

Indicates whether product compliance with applicable RoHS restrictions on hazardous substances has been declared.

Indicates whether the manufacturer declares compliance of the product with applicable REACH Regulation requirements.

Compliance with IEC 61557-12 requirements for power metering and monitoring devices.

Compliance with the European adoption of IEC 61557-12 for power metering and monitoring devices.

Mass of the product together with its individual packaging and the accessories included in it.

External horizontal dimension of the product's individual package.

External vertical dimension of the product's individual package.

External depth dimension of the product's individual package.

Design type of the product's individual or transport packaging.

Mass of the product itself, excluding transport packaging, additional accessories, and external equipment.

Country of origin of the goods declared for customs or commercial purposes.

Commodity code under the international Harmonized Commodity Description and Coding System.

Commodity code under the Combined Nomenclature of the European Union.