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$24.99
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1 Channel 5V Optocoupler Isolated Relay Module, High/Low Level Trigger Relay Board for PLC, Industrial Automation, IoT & Smart Home Control
- Single-channel relay module with DC 5V control voltage, built-in optocoupler isolation to separate control circuit and load circuit, effectively suppress signal interference
- Dual trigger mode support: high level trigger & low level trigger, switchable to match different MCU, PLC and mainboard signal output logic
- Isolation design blocks surge voltage and reverse current, protects main control chips from burnout during load switching
- Wide application compatibility: industrial PLC automation equipment, IoT controller, smart home light/valve/fan switch, DIY electronic control projects
- Clear terminal marking, standard pin layout, easy wiring; small compact PCB size saves installation space inside control boxes
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This 5V 1-channel opto-isolated relay module realizes safe electrical isolation between control signal and load end via integrated optocoupler chip. The switchable high/low trigger function fits various single-chip microcomputers, PLC controllers and IoT development boards. It can control AC/DC external loads such as lamps, water pumps, fans and solenoid valves, widely adopted in industrial automatic control systems and household intelligent transformation projects. The isolation circuit greatly improves system stability and anti-interference performance in complex electrical environments.
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- Return for refund within: 30 days
- Return for replacement within: non-replaceable
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