1.      GSM main unit:100~240AC/6DC(AC optional),2 A

2.      Extending antenna: receiving distance 100meter without signal interfere.

3.      Stand-by current: <90Ma

4.      Alarm current: <200mA

5.      Power consumption: 0.5W

6.      Built-in Li-ion back up battery: 1800mA.3.6V

7.      Wireless frequency: 433MHz  or  315 MHz