If you want to start a project, then you can’t miss this hot deal!!
Sainsmart 4-Channel 5V Relay Module is on sale for $5.99 now!
The sale only last for three days!
This is a 5V 4-Channel Relay interface board which is able to control various appliances with large current. It can be controlled directly by Micro-controller (Raspberry Pi, Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) .
Click for details: http://bit.ly/1i8fHvK