... Packaging Parameter: 500PCS/CTN Frequency Customized: (303M,315M,390M,433M,433.92MHz) Battery Model : 23A Voltage: 12V Encoding ... :We are special to produce wireless remote control, wireless receiver and transmitter modules , wireless receiver controller, infrared detector, door sensor, ... Africa. Moreover, we can rapidly develop and manufacture wireless RF products as every customers' requirement on OEM ...