1 Channel Relay Module without light coupling 5V

The 1 Channel Relay Module is a 5 V relay board that lets a microcontroller switch a separate circuit on and off. This version is without light coupling, meaning it has no optocoupler: the control input drives the relay through a transistor on the board. It is a simple, low-cost way to control lamps, fans, pumps, solenoids and other loads from an Arduino.

1 Channel Relay Module Specifications

• Channels: 1
• Relay coil voltage: 5 V DC
• Isolation: no optocoupler (without light coupling)
• Control pins: VCC, GND and a signal input
• Load terminals: COM, NO (normally open) and NC (normally closed)
• Contact rating: printed on the relay body; check it before connecting a load

1 Channel Relay Module Applications

• Switching lamps, fans and small appliances from an Arduino
• Controlling water pumps and solenoid valves for irrigation
• Home automation and timer projects
• Turning motors or heaters on and off in DIY builds
• Learning how relays work in electronics classes

What's in the Box

• 1 × 1-channel 5 V relay module

Tip: Use the NO terminal if the load should stay off until the relay is switched on. Because this module has no optocoupler, power it from a stable 5 V supply that shares a common ground with your microcontroller, and take great care with mains voltage: disconnect power before wiring and keep the high-voltage side covered.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.