4 Channel Relay Module With Optocoupler Isolation And High Low Level Trigger, Compatible With 5V 12V Or 24V Control Signals, Supports AC 250V 10A And DC 30V 10A Loads, Red LED Indicator, Plug And Play For Arduino Raspberry Pi Projects

4-Channel Relay Module with Optocoupler Isolation
✔️ 1-Pack, 4-channel relay with optocoupler isolation

This 4-channel relay module provides isolated switching for microcontroller projects and is commonly used with Arduino, Raspberry Pi, and other control boards to safely drive AC or DC loads.

✅ 4-channel high/low level trigger with optocoupler isolation; NO contact supports AC 250V/10A and DC 30V/10A
✅ Trigger current around 5 mA for strong drive and stable performance
✅ Works with 5V, 12V, or 24V control signals; jumper-selectable high/low trigger
✅ Fault-tolerant design keeps relays in place if control line disconnects
✅ Status indicators: green power LED and red channel LEDs for quick status check
✅ Terminal block interfaces simplify wiring and mounting
✅ Size: 108mm x 50mm x 18.6mm with four mounting holes (3.1mm diameter) and spacing 6.8cm x 4.4cm
✅ Color: red

💡 What is a relay module with optocoupler isolation used for in control projects? It's handy for safely switching high-power loads from a low-power controller.

- Handy for Arduino, Raspberry Pi and other microcontroller projects needing isolation - Prevents noise and voltage spikes from affecting the controller - Works with 5V, 12V, or 24V control logic and AC 250V/10A or DC 30V/10A loads - Provides clear status indicators for quick troubleshooting