- Operating Voltage: 7 to 12V
- Operating Current: 8 to 250mA
- Maximum Switching Voltage: 35VDC
- Maximum Switching Current: 2A
- Frequency Response: -1-1dB
This 4 Channel Relay Shield is an easy way to control high voltage applications with the Arduino. The maximum switching power for each relay is 70W. You can directly control this shield with the Arduino digital I/Os with an external 9V DC supplty.