... Max keys: 21 keys 3,Plastic keypad 4,Net weight: 33g remote control It is designed with small size, beautiful ... for stabilizing frequency, It is applied for wireless alarms, wireless controlling devices,etc.Using High stability, SMT components ... current: ≤ 30mA; 3,Transmitting power: > 15mw 4,Operating frequency: 315,430,433 MHZ (available for customer ... with us. 2012 brandnew shenzhen remote control