This is an industrial 8-channel Relay module  -8 input - 4 ADC - controlled via RS485 bus, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation  TVS diode, etc. It also comes with an DIN Rail Mount enclosure.

Features

• Configurable device address (1~255), multi devices can be cascaded on RS485 bus

• Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically

• 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 TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic

• Onboard Optocoupler isolation, prevent interference from external high-voltage circuit connected to the relay

• Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection

• High quality relay, contact rating: ≤10A 250VAC/30VDC

• Rail-mounted enclosure, easy to install, safe to use

• 3 LEDs for indicating the MCU status and signal transceiving status

•  

Specifications

• Power supply voltage: 12V

• Communication interface: RS485

• Baudrate:  9600

• Default communication format: 9600, N, 8, 1

• Relay channels: 8   

• Opto Isolated Inputs  - 8 

• Analoug Inputs -4 

• Contact form: 1NO 1NC

• Communication protocol: Standard Modbus RTU protocol

• RS485 address: 1~255

• LED indicators:

  • STA: MCU indicator, Power ON 

  • TXD: TX indicator, light up when sending data

  • RXD: RX indicator, light up when receiving data