2 Channel 5V Relay Module with Optocoupler

The 2 Channel 5V Relay Module With Optocoupler Protection lets a microcontroller safely switch high-power AC or DC loads without risking damage to its own circuitry. The optocoupler isolates the control side from the relay side electrically, so a fault on the load being switched cannot feed back and harm your Arduino, Raspberry Pi or other controller.

Each channel drives a high-current relay rated for 10A at 250VAC, controlled by an active-low input that switches on when the signal falls below 2V and off above it – a jumper allows the mode to be changed to active-high if your project needs it. Each channel needs only 15 to 20mA of driver current and works reliably with both 3.3V and 5V logic levels.

• Channels – 2-channel relay interface board
• Logic voltage – 5V, compatible with 3.3V and 5V controllers
• Driver current – 15 to 20mA per channel
• Relay rating – 10A at 250VAC
• Isolation – Optocoupler protection between control and relay sides
• Trigger mode – Active low by default, jumper-selectable
• Protection – Back EMF protection included
• Indicators – Onboard LED for relay output status

The dual-channel design makes it easy to control two separate loads independently, or to control the direction of a DC motor using both relays together. The 2 Channel 5V Relay Module With Optocoupler Protection is a safe, reliable way to bridge low-voltage control circuits with high-power AC or DC loads.