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Magnetic door switch normally closed. Nc switches are the opposite. Refers to the time when the magnet is not near the switch. In the customer s garage door detector he should use the normally closed nc contacts which are open when the garage door is closed and the magnet is near the switch. 5sets magnetic reed switch magnetic door switch magnetic contact switch normally open closed nc no door alarm window security for dc 5v 12v 24v light 4 3 out of 5 stars 10 16 99 16.
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 3 out of 5 stars 155. This normally closed proximity door switch is built to monitor the opening and closing state of windows and doors. Industrial extended gap overhead door switch set. 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 white 4 1 out of 5 stars 8 8 99 8.
Overhead door magnetic switch sets. Seco larm sl sm200qw normally closed proximity door switch package of 5 door switch. 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. Magnetic reed switches are available closed loop open loop spdt dpdt options with standard wide and extra wide gaps.
The internal switch is closed when the magnet is against the switch. The internal reed switch is closed meaning the circuit is completed when the magnet is near the sensor meaning the door or window is closed. 5sets magnetic reed switch magnetic door switch magnetic contact switch normally open closed nc no door alarm window security for dc 5v 12v 24v light 4 3 out of 5 stars 10 16 99 16. When i tested the switch yesterday i learned that in the case of a magnetic reed switch the word quot normal quot.
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