It is specially designed for low-voltage devices and works well under 3.3V power supplies, just like the Raspberry Pi relay board. In addition, the module has a wide range of power inputs. In our tests, once it reaches 2.8~5.5V, it can also support 1.8V devices.
DFRobot’s Digital Relay Module uses a high-quality 3V relay. It can handle up to 10A current and mechanical parts are guaranteed up to 100 million uses. An onboard indicator LED demonstrates the relay’s state. Terminals include normally open (NO) and normally closed (NC). The module uses a Gravity-3 pin interface, which requires no soldering for convenient plug-and-play usage.

FEATURES
- Supports Arduino, Raspberry Pi, LattePanda, etc.
- 2.8 ~ 5.5V – A wide range of input voltages
- The underside of the board is isolated using an acrylic plate for safety
- Includes an LED Indicator
- Uses a gravity-3 Pin interface for easy, plug-and-play usage
SPECIFICATION
- Operating Voltage: 2.8V ~ 5.5V
- Input Signal: High Level (≥2.8V); Low Level (≤0.5V)
- Max Switching Current: 10A
- Max Switching Voltage: 35VAC; 30VDC
- Rating Load: 10A@35VAC; 10A@28VDC
- Max Switching Power: 300W
- Operate Time: ≤10ms
- Release Time: ≤5ms
- Dimensions: 38 x 33 x 20 mm / 1.5 x 1.3 x 0.81”
- Mechanical Life: 1 million uses
- Electrical Life: 50 thousand uses
- Weight: 20g
It is specially designed for low-voltage devices and works well under 3.3V power supplies, just like the Raspberry Pi relay board. In addition, the module has a wide range of power inputs. In our tests, once it reaches 2.8~5.5V, it can also support 1.8V devices.
DFRobot’s Digital Relay Module uses a high-quality 3V relay. It can handle up to 10A current and mechanical parts are guaranteed up to 100 million uses. An onboard indicator LED demonstrates the relay’s state. Terminals include normally open (NO) and normally closed (NC). The module uses a Gravity-3 pin interface, which requires no soldering for convenient plug-and-play usage.

FEATURES
- Supports Arduino, Raspberry Pi, LattePanda, etc.
- 2.8 ~ 5.5V – A wide range of input voltages
- The underside of the board is isolated using an acrylic plate for safety
- Includes an LED Indicator
- Uses a gravity-3 Pin interface for easy, plug-and-play usage
SPECIFICATION
- Operating Voltage: 2.8V ~ 5.5V
- Input Signal: High Level (≥2.8V); Low Level (≤0.5V)
- Max Switching Current: 10A
- Max Switching Voltage: 35VAC; 30VDC
- Rating Load: 10A@35VAC; 10A@28VDC
- Max Switching Power: 300W
- Operate Time: ≤10ms
- Release Time: ≤5ms
- Dimensions: 38 x 33 x 20 mm / 1.5 x 1.3 x 0.81”
- Mechanical Life: 1 million uses
- Electrical Life: 50 thousand uses
- Weight: 20g