What this means is if you have a magnetic contact usually consisting of a reed switch inside a plastic housing and a separate magnet in a matching plastic housing connected to a door when the door is closed the reed switch within the contact is closed and when the door is opened or the magnet and the contact are separated the reed switch within the contact is also open.
Magnetic door switch normally open.
Spdt switches connect to an alarm system and to another device such as a motion detector.
1 pair door contact magnetic switches please choose the type and the quantity you need type.
N c means normally closed or if you have a magnet touching the motor or led would be off.
Automatic door switches hardwire these switches to automatic door openers electromagnetic locks and electric strikes and your door will open at the touch of a button or the wave of your hand.
2 surface mount rectangular switch.
Mount the magnet to the door or window and mount the switch to the frame.
2sets magnetic reed switch normally open closed nc no door alarm window security magnetic door switch magnetic contact switch reed switch for gps alarm or other device dc 5v 12v 24v light 4 2 out of 5 stars 119.
2x magnetic reed switch normally open closed nc no door alarm window security magnetic door switch magnetic contact switch reed switch to dc 5v 12v 24v light black 4 2 out of 5 stars 15 9 99 9.
Black 4 plated plunger normally open.
The circuit is connected when magnet part is near to the switch part type.
In other words you wire this switch up to a door when the door is closed and the magnet is touching the alarm system would be on.
The normally open means.
2x magnetic reed switch normally open closed nc no door alarm window security magnetic door switch magnetic contact switch reed switch to dc 5v 12v 24v light black 4 2 out of 5 stars 15 9 99 9.
How to get it.
4x cabinet lamp switch wardrobe touch switches drawers open on close door applicable to 12v 24v 110v black.
Wire contacts to an alarm system to alert when doors or windows are opened.
Round magnetic normally open.
The circuit is connected when magnet part is far from the switch part abs plastic construction sleek appearance need to be fixed.
The alarm will activate when the magnet is pulled away by the opening door or window.
Door switches large rect magnetic door switch black 1 surface mount rectangular switch.
1 pair magnetic switch includes two parts the one part is magnet and the other part is switch with wires package included.