Bluetooth Relay board, that plugs into an arduino.

A relay board that I bought for a home automation project -Done with the project but don't want to throw the board away. Plugs into an arduino. The bluetooth IC talks to the arduino via UART and the arduino can control the relay's through pins D4,D5,D6 and D7.

Features:

• 4 channel Relay.
• With Bluetooth wireless interface.
• Arduino compatible.
• 4 SPDT Relay channels (10A 277VAC,10A 120VAC, 5A 250VAC).
• Power supply:5VDC 1AMP
• Current consumption: 400 mA.
• LED indication for relay & power supply.
• Design based on highly proven IC ULN2003 as driver.

Bought from http://researchdesignlab.com/wireless/bluetooth/4-channel-relay-board-bluetooth-compatible-for-arduino.html