10pcs DS1990A iButton DS9092 w/LED Zinc alloy Probe Reader Socket - Picture 11 of 11

                                               

                                      




Note:

please read the following carefully to ensure that the product is what you are looking for. Thank you 

How to distinguish between Recessed NO Magnetic Window and Recessed NC Magnetic Window？

The Recessed Magnetic Window is composed of a reed switch and a magnet.

1. The reed switch is normally open（NO）. When there is no magnet approaching, two small pieces of magnetic reed are disconnected; when 

the magnet is close, two small pieces of magnetic reed are connected. This is a normally open Recessed Magnetic Window（NO）.

Switch Pattern:normally open (NO), when the door(magnet) closed, the switch keeps connecting

10Pcs/Lot Wired NO Wooden Door Contacts Magnetic Switch Access Control w/screws - Picture 11 of 12
 

2. The reed switch is normally closed（NC）.  Two small pieces of magnetic reed are connected when there is no magnet approaching. 

Two magnets are separated when a magnet approaches. This is a normally closed Recessed Magnetic Window(NC)

Switch Pattern:normally closed (NC), when the door closed, the switch are separated.

10Pcs/Lot Wired NO Wooden Door Contacts Magnetic Switch Access Control w/screws - Picture 12 of 12


Specification: 

 

* Working Principle: Magnetic is composed of two parts:a part is permanent magnet and other part is a normally reed switch,when

  permanent magnet close reed switch(less 5mm), magnetic sensor isworking station(short circuit). when magnet separate,it is normal 

  open state.

* Metals shield:  anti-fire ABS
* Connecting mode: NO 
   Normally open (NO), when the door closed, the switch keeps connecting

* Rated current  :  300(mA)
* Rated  voltage :  (VDC) 220
* Operating distance: 15~20mm
* Power: <10(W)

* Dimension:19*25mm(DxL)

* Application:access control ,alarm system

 

 

Package Included:

 

* 10x Magnetic Sensor Switch