Features Row Pin Pulse: The newly upgraded Row Pin pulse version is more suitable for PCB integration, and it is easier to measure power and calibration errors. Communication interface: The physical layer adopts UART to TTL communication interface, the baud rate is 9600, 8 data bits, 1 stop bit, no parity. Function code: support 0x03 (read holding register), 0x04 (read input register), 0x006 (write single register), 0x41 (calibration), 0x42 (power reset), etc. The function code 0x41 is only for internal use (the address can only be 0xF8). Host Slave Machine: The slave does not need to reply to the host, and uses the address OxF8 as a general address, which can only be used in a single slave device and can be used as a calibration address. CRC check: adopts 16-bit format, occupies two bytes, generates polynomial X16+X15+X2+1, and the polynomial value used for calculation is 0xA001. Specification: Item Type: Multifunction Meter Module Material: PCB Voltage Measurement Range: 80-260V Resolution: 0.1V Measurement Accuracy: 0.5% Current Measurement Range: 0-100A Starting Current: 0.02A Resolution: 0.001A Measurement Accuracy: 0.5% Active Power Measurement Range: 0-23kW Starting Power: 0.4W Resolution: 0.1W Display Format: <1000W Display 1 decimal place, such as 999.9W; ≥1000W, display only integers, such as 1000W Power Measurement Range: 0.00-1.00 Resolution: 0.01 Measurement Accuracy: 1% Frequency Measurement Range: 45Hz-65Hz Resolution: 0.1Hz Measurement Accuracy: 0.5% Active Energy Metering Range: 0-9999.99kWh Resolution: 1Wh Measurement Accuracy: 0.5% Display Format: <10kWh, display unit is Wh (lkWh=1000Wh), such as 9999Wh; ≥ 10kWh, displayed in kWh, such as 9999.99kWh Electric Energy Reset: Software Reset Power Over Limit Alarm: The active power threshold can be set, and when the measured active power exceeds the set threshold, the alarm status will be set. Package List: 1 x Test Module 1 x User Manual 1 x Closed CT Package List 1 x Test Module 1 x User Manual 1 x Closed CT