Industrial Automation RS485 Modbus Isolated Relay Module Multiple Channels Available High-Reliability Dual Isolation Multiple Protections ((1-Channel RS485 Relay))

This multi-channel isolated RS485 Modbus bus control relay module is tailor-made for industrial automation scenarios, available in multiple specifications including 1/2/3/4/8/16/32 and 64 channels. It is equipped with original Omron G5NB high-reliability relays and features dual electrical isolation for power supply and signals (with a maximum isolation withstand voltage of 3000 Vrms), which effectively suppresses ground potential differences, surges and common-mode interference at industrial sites to ensure stable communication and equipment safety.The module supports the Modbus RTU protocol with programmable baud rates ranging from 4800 bps to 115200 bps. A built-in 120 Ω terminating resistor eliminates the need for external wiring during commissioning; all parameters are permanently retained after power failure. It incorporates multi-layer protection mechanisms including communication disconnection safety protection, power reverse connection prevention, overcurrent protection, surge protection and ESD protection.It supports diverse operation modes such as standard control, jog toggle, delayed output, cyclic switching and automatic reset to meet complex control requirements. Designed for industrial wide temperature range of -40°C to +85°C, the module adopts flame-retardant ABS insulating base, fits standard 35 mm DIN rail mounting, and is fitted with pluggable screw terminals for efficient wiring and maintenance with easy deployment. Capable of long-term stable operation in harsh industrial environments with extreme temperatures, humidity and heavy dust, it is compatible with mainstream PLCs, industrial personal computers and controller systems.

• Equipped with original G5NB-1A-E high - reliability relays, offering 1/2/3/4/8/16/32/64 channels in various specifications to meet different needs.
• Dual electrical isolation design for power and signal, with a maximum isolation withstand voltage of 3000Vrms. It can suppress interference in industrial sites, ensuring communication and equipment safety.
• Supports Modbus RTU protocol, with a programmable baud rate from 4800 to 115200bps. It has a built - in 120Ω termination resistor, and parameters are permanently saved when power is off.
• Features multiple protections such as communication dropout safety protection, reverse - power connection protection, over - current protection, surge/ESD protection, ensuring stable operation.
• Offers multiple working modes, wide - temperature industrial - grade design, flame - retardant ABS insulated base, 35mm standard DIN rail mounting, and is suitable for harsh industrial environments.