GSM Door Alarm
USD $22 - $65 /Piece
Min.Order:500 Pieces
Jinggoal Electronic(Shenzhen) Company Limited
GSM Door Alarm
1, Inserted to armored doors.
2, Magnetic switch inside, when the door is open, alarm will be activated and messages sent to your mobile phones which preset in system(3 numbers can be stored and changeable).
3, Power supply: AAA*3PCS, working time around 6 monthes(unscrew to change batteries).
4, Single alarm version selectable(without GSM).