Industrial Modbus RTU 8-ch Relay Module, RS485 Bus, Multi Protection (WS-17658

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Valve control, pump station control, unattended industrial control system. 2. Smart Home. Directly Controlling 220VAC Home Appliances, Or Devices Below 30VDC [Applications]1. Industrial Control. Modbus Rtu Relay Industrial Modbus RTU 8-ch Relay Module, RS485 Bus, Multi Protection (WS-17658 16 Channel Question: When I use 24V power supply and use more than 8 channels at the same time, Relay will automatically shut down after working for a period of time. In Case Of Many Devices Are Cascaded, Or The Communication Distance Is Quite Long, It Is Necessary To Use RS485 Repeaters Controlling ventilator, lighting, water supply, feeding system, etc Waveshare Modbus RTU 32-Ch Relay Module, RS485 Interface, With Multiple Isolation Protection Circuits, Mainly Used for Industrial Control, Smart Home, Smart Agriculture, Breeding & Farming Answer: This is caused by our old version setting the module current limiting resistor too large. [RS485 Communication] Configurable Device Address (1~255), Multi Devices Can Be Cascaded On RS485 Bus. Controlling door curtain motor, air blower, etc. 4. Breeding & Farming.