4 Channel Relay Module with Optocoupler

• This 4-channel relay module allows microcontrollers (Arduino, ESP32, Raspberry Pi) to control high-voltage/high-current devices. • Features optocoupler isolation for enhanced protection of your control circuits. • Supports Normally Open (NO), Normally Closed (NC), and Common (COM) contacts for flexible wiring. • Ideal for home automation, robotics, industrial control, and IoT projects. • LED indicators clearly show the status of each relay. • Easy screw terminal connections for straightforward integration. • Compatible with AC and DC loads, making it versatile for various applications like lights, motors, and pumps.