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