... 21 keys 3,Plastic keypad 4,Net weight: 33g ir remote control It is designed with small size, beautiful exterior , Sound wave ... is applied for wireless alarms, wireless controlling devices,etc.Using High stability, SMT components, SAW (sound wave resonator)Optional for ... 7,Transfer data rate: 3-6k8,Encoding type: fixed code, learning code, rolling code9,Encoding chip : PT2262, EV1527, HCS30110,Size:72 ...