Waveshare Industrial Modbus RTU 8-ch Relay Module (E) with RS485, High Current, Multi Isolation Protection, Optocoupler Isolation, Flyback Diode Protection, Rail-Mounted Case.

Configurable device address (1~255), multi devices can be cascaded on RS485 bus Features flash-on, flash-off function, by passing arguments to the command, it is possible to turn on the relay for a while and then close it automatically Onboard voltage regulator, supports 7V~36V wide voltage supply ^^ Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal Onboard unibody ADI magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption ^^ Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit ^^ Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection ^^ High quality relay, contact
rating: 20A (NO) / 10A (NC) 240V AC or 10A 28V DC Rail-mounted ABS plastic enclosure, easy to install, safe to use 3 LEDs for indicating the MCU status and signal transceiving status