This Arduino compatible relay shield has two on-board relays. That means, using this shield you can control two AC loads simultaneously with your Arduino.
This boards two way headers lets you connect it with the arduino board and any other shield on top at the same time.
In this board, Digital Pin 7 and 8 have been used to switch the relays. So, what if you want to control 4-loads with one Arduino? Just pick up our Arduino 2 Channel 5v Relay Shield (Pin7,8) and make it sit on top of this shield. Now, the 4 relays will be able to be switched by Pin no. 7,8,11 and 12 of the arduino board.
Rated coil Voltage:5V DC
Nominal Current:10A at 125V AC, A at 10A at 28V DC