8 Channel Relay Module with light coupling 5V

The 8 Channel Relay Module with light coupling puts eight 5 V relays on a single board, each with an optocoupler (light coupling) on its control input to isolate your microcontroller from the relay side. One Arduino, ESP32 or Raspberry Pi can use it to switch eight separate loads such as lights, fans, pumps, valves and door locks, which makes it a good fit for home automation panels and larger control projects.

8 Channel Relay Module Specifications

• Channels: 8 independent relays
• Relay coil voltage: 5 V DC
• Input isolation: optocoupler on each channel
• Control inputs: IN1 to IN8, plus VCC and GND
• Outputs: COM, NO (normally open) and NC (normally closed) screw terminals on each relay
• Indicators: status LED for each channel

8 Channel Relay Module Applications

• Home automation: switching lights, fans and appliances
• Irrigation systems with pumps and solenoid valves
• Greenhouse, aquarium and poultry farm controllers
• Wi-Fi controlled switch panels with ESP32 or ESP8266
• Control panels for school and workshop projects

What's in the Box

• 1 × 8 channel 5 V relay module

Tip: With all eight relays on, the coils draw more current than an Arduino's 5 V pin should supply, so power the module from a separate 5 V supply. On many versions the inputs are active low, so a relay turns on when its input is pulled to GND. Check the contact rating printed on the relays, and switch off and insulate everything before working with 220 V mains.

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