Note: KERUI RC532 remote control must work with alarm systems, it can not work independently. * Super quality widend keys to avoid misuse* Professional optimize circuit design* Apparently improved signal intensity* Coding IC 1527* Operating frequency:433MHz* Laboratory button tested 100000 time Transmission frequency: 433MHzOperating Power: CR2032 Battery *1Built-in AntennaIt will send the alarm signal to control host once the door or window is opened KIT 1: 1* RC532 wireless remote control(battery include)KIT 2: 3* RC532 wireless remote control(battery include)KIT 3: 5* RC532 wireless remote control(battery include) It can work with all the alarm systems in our KERUI Official Store