【Optocoupler + SPDT】Dual Protection & Control - Optical isolation shields microcontrollers (Arduino/Raspberry Pi) from high-voltage interference. SPDT relay (COM+NO+NC) allows flexible wiring for normally open/closed circuits.
【High/Low Trigger Selectable】No Driver Needed - Jumper-cap to switch between High/Low level trigger. Works with 3.3V-12V control signals (PLC digital outputs, 5V Arduino, 12V automotive ECUs) without extra components.
【LED Indicators + 10A Load】Real-Time Monitoring - Dual LEDs show power status (green) and relay activation (red). Handles loads up to 10A 250V AC (lamps/heaters) or 10A 30V DC (motors/solenoids) – confirm exact ratings in description.
【10 Pack Ready-to-Use】Multi-Device Solution - 10 identical modules pre-wired with screw terminals. Perfect for building control panels, IoT hubs, or automotive mods – save 30% vs single-unit purchases.