4-Channel RS485 Relay Board, Modbus RTU Protocol, 30A High Current 7V~36V, Multi Isolation Protection Circuits, Industrial Grade Rail-Mount Case

This is an industrial 4-ch relay module controlled via RS485 bus, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation, ADI magnetical isolation, resettable fuse, and TVS diode, etc. It is an ideal choice for industrial control equipments and/or applications with high communication requirement. ^^ High Current Screw Terminals. 30A High quality relay, contact
rating: 30A 250V AC or 30A 28V DC. Onboard high quality screw terminals with covers, more convenient for high current wiring. 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. ^^ Comes with relevant resources and tutorials to help you get started quickly: bit. ly/4bQCfUO