10Pcs/Lot Wired NO Wooden Door Contacts Magnetic Switch Access Control w/screws

Description

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 N
C
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 disconnecte
d
; 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
2.
The reed switch is normally closed
（
NC
）
.
T
wo 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
(N
C
), when the door closed, the switch
are
separated
.
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 is working station(short circuit). when magnet separate,it is normal open
state.
-
metals shield  anti-fire ABS
-
connecting mode: NO(Close is shot-circuit)
-
rated current  :  300(mA)
-
rated  voltage :  (VDC) 220
-
operating distance: 15~20mm
-
power: 3(W)
-
Dimension:64*19.5*13mm
-
Application:access control ,alarm system
Package Included:
-
10x Magnetic Sensor Switches
Pictures: