Product features: * 1.It is illegal to open or move and consists of a fixed wireless alarm system and the magnet box of two parts.It can be Used to detect doors, windows, drawers, etc. * 2.when Insert the battery into the work after state and the detection of the displacement is larger than 30mm ( open) , the alarm indicator ( red) light, concurrent alarm signal to the host, the host ( if at this time in the armed state) will be on-site alarm, while Automatically dial the preset phone the police * 1.Operating voltage: 12V * 2.Quiescent Current: 6uA * 3.Alarm current: