Supply Voltage: 3 - 12V DC Battery : 23A 12V ALKALINE(only one) Dimension(mm): 85*37*16 RF Freqence (MHZ):433.92M Hz/315M Hz Current (mA): 15-40 Code tpye: Fixed code(PT2262) Dimension(mm): 85*37*16 RF Freqence (MHZ):433.92M Hz/315M Hz Current (mA): 15-40