Product parameters of door magnetic switch:
Power: 10W/50W (w)
Voltage: 100-220VDC (V)
Installation type: SMT or screw fixation
Shell material: ABS
Type: Wired door magnet
Current: 0.5 (mA)
Scope of application: Control alarms for doors, windows, cabinet doors, etc
Working distance: 0-10MM (special customizable) (mm)

The system principle of door magnetic switch:
The door magnetic system is a safety alarm system, which is divided into door magnetic and window magnetic (with the same principle but different shapes). It is not easy to see the door/window magnets if you are not paying attention. The so-called door magnet/window magnet is actually the abbreviation for door magnet switch and window magnet switch, consisting of two parts: the smaller part is the permanent magnet, which has a permanent magnet inside to generate a constant magnetic field, and the larger part is the door magnet body, which has a normally open reed switch inside. When the permanent magnet and reed switch are very close (less than 5 millimeters), the door magnet sensor is in a working waiting state. When the permanent magnet is a certain distance away from the reed switch, it is in a normally open state. Magnets and reed switches are installed in door frames (window frames) and door sashes (window sashes) respectively, and are basically embedded installations (there are also surface installations), so non industry professionals generally cannot pay attention to these. You can open the partition door and external window, take a look at the top of the partition door frame and the window frame of the external window, and you can see the circular, usually white components, which are actually called door magnets and window magnets.