Ac Voltage And Ammeter Rs485 Serial Port Electronic Communication Box

feature: *Mainly used to measure AC voltage current active power power factor frequency and power consumption. *This product has two specifications: built-in transformer measuring current range 0-10A external transformer (CT) measuring current range 0-100A *The physical layer uses UART to RS485 communication interface with a baud rate of 9600 8 data bits 1 stop bit and no parity. *The application layer uses the ModbusRTU protocol for communication and only supports function codes such as 0x03 0x04 0x06 0x41 and 0x42. *Power over-limit alarm: The active power threshold can be set. When the measured active power exceeds the set threshold the alarm state is set. *Communication interface: RS485 interface *Dimensions: 90x60.5x23 *Power supply: The AC voltage provides two isolated outputs after passing through the switching power supply. 1 channel of 3.3V is supplied to the measurement system and the other channel of 5V is supplied to the 485 communication circuit and external circuits. The power supply (+5V) of the 485 communication interface has a current output capacity of 100mA Working temperature: -20°C~+60°C Specification: Measuring range: 0-100A (A) Power supply voltage: 80~260 (V) Accuracy: 1.0 Overall dimensions: 90*60.5 (mm) Electronic communication box: RS485 Communication: Communication Box Package Contents: A: Communication box (built-in transformer 10A) B: Communication box + closed CT (100A) C: Communication box + opening and closing CT (100A) D: Communication box (built-in transformer 10A) + USB to 485 module E: Communication box + closed CT (100A) + USB to 485 module F: Communication box + opening and closing CT (100A) + USB to 485 module