The 12V Dual Channel Relay Module (Low-Level Trigger) is a reliable solution for controlling high-power AC and DC electrical loads from a microcontroller or development board. It features two independent 10A relays that can switch devices such as lights, fans, motors, pumps, solenoids, and other electrical equipment.
This module uses an Active LOW (Low-Level Trigger) input, meaning each relay is activated by applying a LOW (GND) signal to the corresponding input pin. Built-in back EMF protection and freewheeling diodes help protect the controlling microcontroller from voltage spikes generated by inductive loads. High-quality screw terminals, LED status indicators, and mounting holes make installation quick and convenient for automation, robotics, Arduino, ESP32, Raspberry Pi, PLC, and industrial control projects.
| Parameter | Specification |
|---|---|
| Relay Channels | 2 |
| Operating Voltage | 12V DC |
| Trigger Type | Low-Level Trigger (Active LOW) |
| Trigger Input Voltage | GND |
| Relay Contact Rating | 10A @ 250VAC |
| Relay Contact Rating (DC) | 10A @ 30VDC |
| Driver Current | 15–20mA per Relay |
| Output Type | NO / NC / COM |
| Protection | Back EMF Protection, Freewheeling Diode |
| Terminal Type | KF301 Screw Terminal |
| Dimensions | 49 × 37.5 × 17 mm |
| Weight | 27 g |
This module uses an Active LOW (Low-Level Trigger) control method.
The relay is activated only when the corresponding input pin is pulled to GND (LOW). Without a LOW trigger signal, the relay stays in its default OFF state.
| Pin | Description |
|---|---|
| VCC | 12V Power Supply (+) |
| GND | Power Supply Ground (-) |
| IN1 | Relay Channel 1 Low-Level Trigger Input |
| IN2 | Relay Channel 2 Low-Level Trigger Input |
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