MEMKEY 433MHz Wireless Channel Remote Control dc 12V 4 Channels Remote rf Relay Switch 2 Transmitters + 1 Receiver for Garage Door/Gate Alarm

Long Distance: Powerful signals of the channel remote control can pass through walls, floors and doors to control the receiver from any position at a safe distance. The maximum range is up to 30 meters and is accessible. Security Control: The learning code offers high security due to the low repetition rate and the re-learning mode, which allows the old code to be erased and new code to be re-learned if the remote control is lost. Up to 16 different remote codings can be supported. Operation Mode: On/Off control device with 4CH 433MHz radio and 2 transmitters. Steering/Reverse, On/Off control device. The switch is self-locking and locked. Unique Design: The wireless remote control is very easy to install and use, stable and reliable performance, high receiving sensitivity (>-105dBm). The remote control switch uses wireless coding technology, does not change direction and does not interfere with each other. Excellent application: Wireless remote control applications range from simple