Iot Electricity Meter 3 Phase Smart Energy Meter Wifi MQTT Wattmeter Power Meter ADW300/4G Iot Based Electricity Energy Meter





● IoT EMS WEB for PC user
● IoT EMS APP for mobile user

● Voltage Unbalance
● Current Unbalance

● 4-channel DI (Digital Input)
● 4-channel Cable Temperature Monitoring
● 1-channel Residual Current Measurement

● 4-channel DI (Digital Input)
● 4-channel Cable Temperature Monitoring
● 1-channel Residual Current Measurement


Function | Description | ||||||
Measurement of Energy | kWh (positive and negative) | ||||||
kvarh (positive and negative) | |||||||
A,B,C 3-phase positive kWh | |||||||
Electric Parameters | U, I, P, Q, S, PF, Hz | ||||||
Harmonic | THDv, Harmonic on 2nd-31st | ||||||
Pulse output | Active pulse output | ||||||
3-Phase Imbalance | Voltage imbalance,current imbalance | ||||||
Display | LCD display with 8 digits | ||||||
Wireless Comms. | 4G, WiFi, LoRA, NB-IoT (Optional), Support MQTT, MODBUS-TCP protocol | ||||||
Wired Comms. | RS485 interface with MODBUS-RTU protocol (Standard) | ||||||
Swtich | 4 DI & 2 DO | ||||||
Residual Current | 1 way residual current measurement | ||||||
Temperature | A,B,C,N. 4 ways temperature measurement | ||||||
Parameter | Description&Value | ||||||
Input Voltage | Nominal Voltage | For High Voltage: 3×57.7~69.24Vac L-N & 100~120Vac L-L (Paired with PT) ------------------------------------------------------------------------------------ For Low Voltage: 3×220~264Vac L-N & 3x380~456Vac L-L (Direct Connect) 3×380~456Vac L-N & 3x660~792Vac L-L | |||||
Frequency | 50Hz~60Hz | ||||||
Comsumption | <0.5 VA (Each phase) | ||||||
Input Current | 3×1(6)A | ||||||
Swtich | 1‰ Ib (Class 0.5S),4‰ Ib (Class 1) | ||||||
Residual Current | <1VA (Each phase) | ||||||
Auxiliary Power | Power Supply | 85~265Vac L-N | |||||
Power consumption | <2W | ||||||
Measurement Performance | Standard | IEC 62053-22:2003,IEC 62053-21:2003 | |||||
Active Power Accuracy | Class 0.5S(ADW300) Class 1(ADW300W) | ||||||
Temperature Measuring Accuracy | ±2℃ | ||||||
Pulse | Width of pulse | 80±20ms | |||||
Pulse constant | 6400imp/kWh , 400imp/kWh | ||||||
Communication | Wireless Communication | 4G (built in world-wide 4G module for global server frequency bands) WiFi (2.4GHz), LoRa, NB-IoT, RS485 (standard MODBUS-RTU) | |||||
Infrared Communication | Constant baud rate 1200 | ||||||
Interface | RS485(A+、B-) | ||||||
Connection Mode | Shielded twisted pair conductors | ||||||
Protocol | MODBUS-RTU | ||||||
Environment | Operating Temperature | -20℃~55℃ | |||||
Storage Temperature | -40℃~70℃ | ||||||
Humidity | ≤95% (No condensation) | ||||||
Altitude | ≤2000m | ||||||

















We are based in Shanghai, China, start from 2017,sell to . There are total about 501-1000 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Energy Meter,Power Transducer,Ammeter,Voltmeter,Temperature Humidity Controller,Ammeter and Voltmeter,Current Transformer,Temperature Monitoring Device,Power Sensor,Multifunction Meter
4. why should you buy from us not from other suppliers?
Acrel E-Business Co., Ltd is one of the few leading companies in China who provides various systemic solutions of power monitoring,power controland eletrical safety for smart grid users.we have been focused on the sales of intelligent electric meters.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,DDP,DDU,Express Delivery;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,MoneyGram,PayPal,Western Union,Cash;
Language Spoken:English,Chinese
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