Modbus RTU 16-Ch Relay Module with RS485 Interface, Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case, Supports Win7/8/8.1/10/11,Linux, Android,etc.

About this item RS485 Communication: Configurable device address (1~255), multi devices can be cascaded on RS485 bus. In case of many devices are cascaded, or the communication distance is quite long, it is necessary to use RS485 repeaters. 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. Onboard dedicated relay driver chip, with built-in freewheeling diode protection, the driving ability is stronger and more stable.