ElecFreaks
2 Channel 12V Relay Module
The 2-Channel 12V Relay Module allows you to control two high-power devices independently using low-voltage signals from a microcontroller such as Arduino. E...
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The 2-Channel 12V Relay Module allows you to control two high-power devices independently using low-voltage signals from a microcontroller such as Arduino. Each channel features an optocoupler-isolated relay with normally open (NO) and normally closed (NC) terminals for flexible switching configurations.
Designed for easy integration, the module includes indicator LEDs for relay status and screw terminals for secure high-voltage connections.
Key Features
- 2 Independent Channels – Control two devices separately
- 12V Relay Coils – Requires 12V supply for relay operation
- Optocoupler Isolation – Protects your microcontroller from high-voltage feedback
- Screw Terminals – NO, NC, and COM connections per channel
- Status LEDs – Visual indication of relay state
- Low-Level Trigger – Activate relays with a LOW signal from your microcontroller
Ideal For
- Home automation and smart switching
- Motor and pump control
- Lighting control systems
- Arduino and microcontroller relay projects
Package Contents
- 1× 2-Channel 12V Relay Module
Jargon buster
Plain-language definitions for the technical terms used above.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- Relay module
- A relay module uses an electrically controlled switch to let a low-power microcontroller control a separate circuit. It matters when switching devices that need different voltages or more current than a microcontroller pin can safely handle.
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