Power supply: 2 CR2016 button batteries Modulation method: ASK Wireless frequency: 433MHZ launch distance: 100M (open space) Encoding method: HS1527, oscillation resistance 220K Quiescent current: <1uA Operating current <20mA Material: ABS Operating temperature: 0- +50 Relative humidity: 10% -95% Dimensions: 58x35x12mm * 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 times Kit 1: 3* RC531 wireless remote control (battery include)Kit 2: 5* RC531 wireless remote control (battery include) KERUI RC531 remote control can work with all the alarm systems in our KERUI Official Store.