8 Channel 5V Relay Module with Optocoupler

This 8-channel 5V relay module is a powerful interface board that lets you control high-voltage and high-current devices using low-voltage signals from a microcontroller. Each of the eight onboard relays is individually switched and paired with optocoupler isolation, creating a safe electrical barrier between your control circuit and the connected load. This makes it an excellent choice for Arduino, ESP32, Raspberry Pi, and other MCU-based automation projects where safety and reliability matter. The module uses active-low logic, meaning each channel activates when its input pin receives a LOW signal, and every channel includes both normally open (NO) and normally closed (NC) terminals for flexible wiring options. Screw-type terminal blocks make connecting mains wiring or DC loads quick and secure, while onboard LED indicators show the real-time status of each relay. A VCC selector jumper allows you to choose between shared power or isolated power for the relay coils, giving you added flexibility depending on your project’s power setup. Ideal for home automation, industrial control panels, smart switching systems, and any DIY project requiring multiple independent high-power outputs, this module is a reliable, beginner-friendly solution for expanding what your microcontroller can control.

Specification:

• Channels : 8
• Relay Coil Voltage : 5V DC
• Trigger Logic : Active LOW
• Contact Rating : 10A at 250VAC / 10A at 30VDC
• Isolation : Optocoupler isolated
• Contact Type : NO and NC per channel
• Terminal Type : Screw terminal blocks
• Indicator : LED status per channel