PEACEFAIR PZEM-003 DC Voltage Current Power Energy Consumption Meter Communication Module (#2) Features: Comes with built in shunt, the current measure range is 0.01-10A. Physical layer use UART to RS485 communication interface, baud rate is 9600, 8 data bits, 2 stop bit, no parity. The application layer use the ModbusRTU protocol to communicate, it only supports function codes such as 0x03, 0x04,0x06, 0x41, 0x42, etc. Specification: Brand: PEACEFAIR Model: PZEM-003 Resolution: 0.01V Measurement Accuracy: 1% Current: Measuring Range: 0.01-10A Resolution: 0.01A Measurement Accuracy: 1% Power: Measuring Range: 0.1-3kW Resolution: 0.1W Measurement Accuracy: 1% Energy Consumption: Measuring Range: 0-9999kWh Resolution: 1Wh Measurement Accuracy: 1% Reset Energy: Use Software to Reset Communication Interface: RS485 Interface Working Temperature: -20~60℃ Product Size: Approx. 9*6*2.3cm/3.5*2.4*0.9inch Weight: Approx. 72g~92g / 2.5oz~3.2oz Description Resolution Voltage value 1LSB correspond to 0.01V Current value 1LSB correspond to 0.01A Power value low 16 bits 1LSB correspond to 0.1W Power value high 16 bits Energy value low 16 bits 1LSB correspond to 1Wh Energy value high 16 bits High voltage alarm status 0xFFFF is alarm,0x0000 is not alarm Low voltage alarm status 0xFFFF is alarm,0x0000 is not alarm Register address Description Resolution 0x0000 High voltage alarm threshold(5~350V), default is 7V 1LSB correspond to 0.01V 0x0002 ModbusRTU address The range is 0x0001~0x00F7 Optional Kit #1 1 x DC Consumption Meter #2 1 x DC Consumption Meter 1 x RS485 B Cable Note: RS485 interface is passive output, need external connect 5V power supply and the external power supply should ＞100mA. Do NOT use the USB port bring by your PC to be the independent power supply, otherwise it may damage your PC.