Waveshare Industrial 4-Ch DC Monitoring Module, 16-bit High-Precision Acquisition, Supports Voltage and Current Measurement, Modbus RTU Protocol, with Various Isolation and Protection Circuits

Configurable device address (1~255), multi devices can be cascaded on RS485 bus. Onboard voltage regulator, supports 7~36V wide range power supply
Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal. Onboard optocoupler isolation, allows signal isolation, high reliability, strong anti-interference
Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
Onboard 0.002 ±1% current sense resistor with 16-bit high-precision acquisition, capable of bidirectional current measurement. Supports voltage measurement up to 36V and current measurement up to 8A, with direct power measurement
Rail-mount case design, supports stacking combination, easy to install and safer to use. 3x LEDs for indicating the MCU status and signal transceiving status