| Wireless Smart Revenue Meter | Direct measurement of voltage, current, active energy, reactive energy and power factor. | RF mesh, cellular, NB-IoT, LTE-M or long-range low-power radio. | Single-phase or three-phase low-voltage service; commonly used for utility or building-level billing. | Commonly designed to meet IEC or equivalent national accuracy classes, often Class 1 or better for active energy. | Residential utility metering, commercial premises, apartment buildings and distributed energy programs. | Remote reads, tamper detection, load-profile data and reduced manual meter reading. | Higher installation and cybersecurity requirements; network coverage affects data availability. | Check local approval rules, legal-metrology requirements, radio bands, SIM support and data-protection obligations. |
| Wireless Submeter | Measures electricity used by a tenant, floor, circuit, machine or service area behind the main meter. | Zigbee, Bluetooth Mesh, Wi-Fi, sub-GHz RF or LoRaWAN. | Single-phase or three-phase branch circuits, usually in low-voltage distribution boards. | Typically approximately 1% to 2% for energy monitoring; billing use requires the applicable certified class. | Tenant billing, energy allocation, office buildings, hotels, campuses and industrial facilities. | Supports cost allocation without replacing the main utility meter; scalable for multi-point monitoring. | May require current transformers, gateway devices and careful circuit mapping. | Confirm whether the meter is intended for monitoring or legally enforceable billing and verify local installation rules. |
| Wireless Split-Core CT Meter | A split-core current transformer measures current without disconnecting the conductor; voltage is measured directly or estimated depending on design. | LoRaWAN, sub-GHz RF, cellular or proprietary low-power radio. | Often used on individual feeders or circuits from tens to several hundred amperes, subject to CT rating. | Current measurement accuracy commonly ranges from about 1% to 3%; total energy accuracy depends on voltage measurement and calibration. | Retrofit projects, occupied buildings, temporary surveys, rented premises and remote equipment monitoring. | Fast installation, minimal downtime and no need to remove the existing conductor. | CT placement, conductor position, phase imbalance and low-current performance can affect results. | Select the correct CT aperture, current range, insulation rating, phase configuration and enclosure protection level. |
| Wireless Three-Phase Power Meter | Simultaneous measurement of three-phase voltage, current, active power, reactive power, apparent power and energy. | Ethernet-to-wireless gateway, Wi-Fi, cellular, RF mesh or LoRaWAN. | Low-voltage three-phase systems, commonly 3-wire or 4-wire configurations. | Many monitoring models specify approximately 0.5% to 1% active-energy accuracy; certified models may provide higher accuracy. | Factories, data centers, commercial buildings, pumps, HVAC systems and large solar or storage installations. | Provides phase-by-phase visibility, load balancing data and power-quality indicators. | More complex wiring and commissioning; incorrect phase sequence or CT orientation can produce misleading results. | Verify nominal voltage, frequency, CT ratio, neutral arrangement, harmonic capability and applicable safety standards. |
| Wireless Pulse-Output Energy Meter | A certified meter generates pulses proportional to measured energy; a wireless transmitter sends the pulse count to a monitoring platform. | Sub-GHz RF, LoRaWAN, cellular or pulse-to-gateway wireless modules. | Depends on the connected electricity meter; commonly used for single-phase and three-phase installations. | Determined primarily by the underlying certified meter and its pulse constant, such as pulses per kWh. | Legacy-meter upgrades, multi-utility platforms, industrial submetering and sites requiring simple data integration. | Works with existing meters and can simplify integration with building-management systems. | Usually provides limited electrical data and may not support voltage, current or power-quality analysis. | Match pulse type, pulse constant, debounce settings, isolation requirements and data-recovery behavior after outages. |
| Wireless DIN-Rail Energy Meter | Fixed installation inside a distribution board for measurement of a circuit or group of circuits. | Wi-Fi, Zigbee, RS-485 with a wireless gateway, RF mesh or cellular gateway. | Typically single-phase or compact three-phase low-voltage circuits. | Common monitoring accuracy is approximately 1% to 2%, depending on current range and model certification. | Smart homes, small offices, retail stores, distribution panels and light commercial facilities. | Compact form factor, organized installation and easy expansion across multiple electrical panels. | Requires panel access and qualified installation; wireless signal may be weakened by metal enclosures. | Check DIN-rail dimensions, terminal capacity, isolation distance, operating temperature and panel space. |
| Wireless Portable Energy Logger | Temporary voltage and current sampling records energy consumption, demand and selected power-quality parameters. | Bluetooth, Wi-Fi, cellular or local wireless connection to a tablet, gateway or cloud service. | Single-phase or three-phase circuits, depending on probe and voltage-lead configuration. | Commonly approximately 0.5% to 2% for energy monitoring, subject to sensor and installation conditions. | Energy audits, commissioning, troubleshooting, demand studies and equipment benchmarking. | No permanent installation; useful for identifying peak demand, abnormal loads and operating patterns. | Battery life, temporary sensor placement and data gaps may limit long-term monitoring. | Prioritize electrical safety category, insulation ratings, measurement interval, memory capacity and calibration documentation. |
| Wireless Prepayment Energy Meter | Measures energy consumption and supports credit, tariff, balance and load-disconnection functions. | RF mesh, cellular, smart-card interface or other secure two-way communication. | Usually single-phase residential service, with three-phase versions available for selected applications. | Must comply with the accuracy and legal-metrology requirements applicable to the local billing market. | Residential markets with prepaid tariffs, remote credit management or controlled electricity access. | Supports remote top-up, tariff flexibility, credit alerts and reduced collection costs. | Requires strong security, reliable two-way communication and careful handling of emergency-credit rules. | Confirm national payment systems, tariff regulations, consumer-protection rules, encryption requirements and remote-disconnect restrictions. |
| Wireless Bidirectional Energy Meter | Separately measures imported and exported active energy for systems with generation or storage. | Wi-Fi, cellular, RF mesh, LoRaWAN or a local wireless gateway. | Single-phase or three-phase low-voltage systems connected to solar PV, batteries or other distributed generation. | Common monitoring accuracy is approximately 1% or better; grid settlement requires the applicable certified accuracy class. | Rooftop solar, battery storage, microgrids, electric-vehicle charging and net-metering installations. | Enables self-consumption analysis, export tracking, battery control and import-demand management. | Incorrect installation direction or configuration can reverse import/export results; local interconnection rules apply. | Check four-quadrant measurement, anti-tamper functions, export limits, grid-code compliance and approval for settlement use. |
