When the magnet is close to the switch, the contact of the reed is closed and the signal line is connected. If the door is opened, the magnet leaves the switch, the reed contact is disconnected and the signal line is interrupted, it is called ---- -- "circuit breaking alarm".
Features:
Designed for use with alarm systems. Great for use in family and factory window, door. etc.(Cant be used as a light switch)
Open installation for non-ferrous door or window mounting
This magnetic door sensor adopts high quality material, long service life
This sensor is NC (normally closed type), circuit is connected when magnet is near the switch.
Easy installation and reliable performance, best choice for you to protect family
Specification:
Material: ABS material
Color: white
Max switch current: 0.5A
Max switch power: 10W
Motion distance: 18mm±6mm
Life span: times
Switch output: normally closed
Installation type: Open installation
Application: non - ferrous doors and
Size: 28cm/11in
Weight: Approx.202g/7.1oz
Package list:
20 pair x door magnets
1 set x screw