Features: 1. Operation Current:10MA 2. Operation Freq:433MHz 3. Work of Alarm System 4. 4 Button:Arm Away Mode, Arm At home Mode, Emergency Mode and Disarm Mode) 5. Sending Distantce:Outdoor 80~100M(no obsctale), Indoor:8~10M 6. Operation Temp: -10C~50C;Humidity:no more than 90% Note: 1. we default 433mhz if you dont leave us a message for frequency choice 2. this remote control is not suitable for all alarm system.