SpzcdZa Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security Product Description: Magnetic Contact sensors can be added to an existing wired Alarm Systems.
They are ideal for protecting doors, windows and patio doors and any opening device such as a drawer or cupboard for example.
In the event of no contact the alarm will be activated immediately.
Magnetic Contacts are perfect for use in situations where it is not suitable to fit PIR sensors, for example where there are pets or animals.
Technical Specifications: Product Name : Magnetic DoorContactReed Switch
Material: Anti-fire ABS shield,Color: White
Connecting mode: N.C./N.O conbined
Rated current: 500(mA);Rated voltage: (VDC)100;Rated power: 10W
Operating distance: more than 15mm, less than 25mm
Dimension:55*12.5*11.5mm; Mounting Hole Size : 7 x 2.5mm/ 0.28" x 0.1"(L*W)
Application: Recommendations in application: wooden door, window, metal doors, gates and any other compatible application.
About Normally Closed and Normally Open N.C. / N.O. Definition N.C. means Normally Closed: When the magnet together, the circuit is conductive( light on ); When the magnet separates, the circuit is not conductive ( light off );
N.O. means Normally Open: When the magnet separates, the circuit is conductive( light on ); When the magnet together, the circuit is not conductive ( light off ).
Please check the right need carefully before purchasing it!
The door and window magnet should be installed at the closed position of the door/window.
The magnet part is installed on the movable door and window. The switch part is installed on the fixed door and window frame. The switch part and the magnet part should be aligned as much as possible.
It can only provide a switch signal to the device, which cannot directly load the power, nor directly connect the lamp!
The door magnet should be away from the strong magnetic field interference source such as a transformer. Otherwise, the working characteristics of the door magnet will be changed and possible wrong actions.