Features ROW PIN PULSE: The newly upgraded Row Pin Pulse version is more suitable for PCB integrated use, simplifying power measurement and error calibration. COMMUNICATION INTERFACE: The physical layer uses a UART to TTL communication interface, with a baud rate of 9600, 8 data bits, 1 stop and verify bit. FUNCTION CODES: Supports 0x03 (read holding register), 0x04 (read input register), 0x006 (write single register), 0x41 (calibrate), 0x42 (power reset), etc. The function code 0x41 is for internal use only (the address can only be 0xF8). SLAVE HOST MACHINE: The slave does not need to respond to the host, and uses the OxF8 address as a universal address, which can only be used in a single slave device, and can be used as a calibration address. CRC CHECK: It adopts a 16-bit format, occupying two bytes, and generates a polynomial of X16+X15+X2+1, the value of the polynomial used for the calculation is 0xA001. Specification: Item Type: Multifunctional Meter Module Material: PCB Voltage measurement range: 80-260V Resolution: 0.1V Measurement accuracy: 0.5% Current measurement range: 0-100A Initial current: 0.02 A Resolution: 0.001 A Measurement accuracy: 0.5% Active power measurement range: 0-23 kW Initial power: 0.4 W Resolution: 0.1W Display format: Package List 1 x Test Module 1 x User Manual 1 x Closed CT