5V 4 Relay Module with Optocoupler
The 5V 4 Relay Module with Optocoupler is a reliable switching interface board designed to control four independent high voltage loads from low voltage logic signals. Each relay channel is isolated from the control side using optocouplers to protect microcontrollers and reduce noise interference. The module operates on standard 5V logic and is compatible with Arduino, ESP boards, Raspberry Pi (with level shifting), and other microcontroller platforms.
Ideal for home automation, industrial control, robotics, and smart IoT projects, this relay module enables safe switching of appliances, motors, lamps, and other electrical devices. Onboard LED indicators provide visual status for each relay, and the screw terminal connectors make wiring simple and secure.
KEY FEATURES
- Operates on 5V DC logic
- 4 independent relay channels
- Optocoupler isolation for protection
- LED status indicators for each relay
- Supports high voltage switching
- Easy screw terminal connections
- Compatible with popular microcontrollers
- Suitable for automation and control projects
SPECIFICATIONS
- Control Voltage 5V DC
- Number of Channels 4
- Isolation Optocoupler based
- Relay Type Mechanical
- Max Switching Voltage AC 250V / DC 30V
- Max Switching Current 10A per channel
- Input Interface Logic control
INTERFACES
- VCC 5V DC power input
- GND Ground
- IN1 Control input relay 1
- IN2 Control input relay 2
- IN3 Control input relay 3
- IN4 Control input relay 4
- COM1 Common terminal relay 1
- NO1 Normally Open terminal relay 1
- NC1 Normally Closed terminal relay 1
- COM2 Common terminal relay 2
- NO2 Normally Open terminal relay 2
- NC2 Normally Closed terminal relay 2
- COM3 Common terminal relay 3
- NO3 Normally Open terminal relay 3
- NC3 Normally Closed terminal relay 3
- COM4 Common terminal relay 4
- NO4 Normally Open terminal relay 4
- NC4 Normally Closed terminal relay 4
