Industrial Modbus RTU 8-Ch Relay Module (D) with Digital Input and RS485 Interface, Multi Isolation Protection Circuits, 7~36V Power Supply

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 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

Supports passive and active digital input, with bi-directional optocoupler isolation, built in debouncing algorithm. The relay supports digital input linkage control or toggle control

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

High quality relay,
contact rating: 10A 250VAC/30VDC. Rail-mounted ABS plastic enclosure, easy to install, safe to use. Multiple LEDs for indicating the MCU status and signal transceiving status