Just fixed the alarm in the door and doorposts or two door window respectively.aligned(keep 5mm clearance)
When someone illegal opened the door or window(the alarm'main parts and annex Relative position change),the alarm can produce a strong alarm warns that the invaders leave.
Suitable for residential, office, shop etc
Use 3 x 1.5 V LR44 button cells (already included in the inside machine, normal use time over a year)
Specification:
Main parts size: 6x3x2cm
Annex size: 5.4x1.3x1.1cm
Sirens loudness:90dB
weight:50g
Power supply: 3 x 1.5 V LR44 button cells (installed on the host, within the normal use time over a year)
Package:
1 x Magnetic Sensor
1 x Magnetic Stick
3 x LR44 Button Batter
