4-CH Relay Module

Features:

1. 4 independent relay channels (control 4 devices separately)
2. Works with 5V control signal (Arduino/ESP compatible)
3. Supports AC and DC load switching
4. Optocoupler isolation (improves safety & reduces noise)
5. LED indicators for each channel (status display)
6. Screw terminals for easy and secure wiring
7. Stable and reliable switching performance