This product suitable for electrical control circuit such as anti-theft alarm， remote control electric windows， signal control， industrial control， lifting equipment and so on. It uses fixed wireless code encoding， has no direction. The switch will not disturb each other.Because of the 12V remote control，we suggest that the power supply must more than DC 500mA.Each receiver board can withstand the maximum current of 10A.Best quality， your good choice! 100% brand new and high quality Quantity:1set Applications: Remote locking， electric shutter doors， industrial control， wireless Barrier， wireless control products， etc. Easy and convenient to use4-way learning controller: Working voltage: DC12V Frequency: 315MHZ Contact capacity: 10A/220VAC， 10A/24VDC Control channel: four normally open (normally closed) contacts Channel: 4 Encoder chip: 2260 1527 2262 Operating Temperature: -10?C~70?CRemote control: Using SAW， firing frequency stability， and transmission distance Remote control distance:1000 meters (Theoretical distance) Working voltage: DC12V 23A Working mode: ASK/OOK Frequency: 315MHZ Encoder chip: PT2264 1527 2240 Power by 1 * AA battery (Not included)Package included: 1 x 12V 10A 4 Channels Wireless remote control switch (Without retailing packing) 1 x Remote Controller