ReviewsPretend Closed circuit System

Panopticon Tech 3 pcs Wired White Door Contacts Surface Mount NC Security Alarm Window Sensors.These ¾ inch Contact Position switches (DCS) Work with All Access Control and Burglar Systems

3 White ABS Surface Mount Normally Closed Door Contact Switch with 11" Pigtail.
Will make Sense Door Closer at Roughly ¾” or 15mm.
This Contact Works with Any Access Control or Burglar Alarm System Available.
NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..

1 White ABS Normally Closed Door Contact Switch.
Will make Sense Door Closer at Roughly ¾” or 15mm.
This Contact Works with Any Access Control or Burglar Alarm System Available.
NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..

Total Size: 47.5 x 24 x 14.4mm / 1.87 x 0.94 x 0.57 inch (L*W*H).
[N.O./N.C.] - 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 ). When make order, pls check carefully!.
[Material] - The magnetic switch alarm is with durable zinc alloy housing for better rust resistance.
[Widely Used] - This Door Contact switch ensor works with any access control or burglar alarm system available.

3 Brown ABS Normally Closed Door Contact Switch.
Will make Sense Door Closer at Roughly ¾” or 15mm.
This Contact Works with Any Access Control or Burglar Alarm System Available.
NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..

1 Brown ABS Surface Mount Normally Closed Door Contact Switch.
Will make Sense Door Closer at Roughly ¾” or 15mm.
This Contact Works with Any Access Control or Burglar Alarm System Available.
NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..

1 Brown ABS Normally Closed Miniature Door Contact Switch 5/8 by 3/8 with 11" pigtail.
Will Sense Door Closer at Roughly 1/2” or 10mm.
This Contact Works with Any Access Control or Burglar Alarm System Available.
NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..

1 White ABS Normally Closed Miniature Door Contact Switch 5/8 by 3/8 with 11" pigtail.
Will Sense Door Closer at Roughly 1/2” or 10mm.
This Contact Works with Any Access Control or Burglar Alarm System Available.
NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..

RC-33 NC Recessed Wired Window Door Contact Sensor Alarm Magnetic Reed Switch.
Magnet near together, the switch is closed.And the switch and magnet is separate, the switch is open..
NC means Normally Closed: When the magnet together, the circuit is conductive( light on ).
when the magnet separate, the circuit is not conductive ( light off )..
NC means Normally Closed:When the magnet together, the circuit is conductive( light on ).
Each Size(Approx): 17 x 10.6mm / 0.67 x 0.42-inch (H*D) Cable Length(Each): 25cm / 9.8-inch.

1 Brown ABS Surface Mount Normally Closed Door Contact Switch with 11" Pigtail.
Will make Sense Door Closer at Roughly ¾” or 15mm.
This Contact Works with Any Access Control or Burglar Alarm System Available.
NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..

【Reed Switch】：IMPORTANT : When the magnet is near it makes connectivity, when the magnet is removed connectivity is broken.Wired magnetic door/windows contact can be added to wireless/wired Alarm Systems.(some wireless system has wired zones).
【No External Power Needed】：Connect to wired alarm control panel, GND (Positive) Connect with NC(Negative) ports directly which make signal stability and no trouble for the battery. These Wired Reed Switches means it needs wire to connect with the alarm control panel, but wire is not including in the package..
【Install Distance】：Gap between 2 pieces more than 15mm, less than 25mm.White color make home great and beautiful. Anti-fire ABS material..
【Install Attention】：Item CAN NOT connect directly to power, it works with your alarm system provide a switch signal.Working current under 12V..
【What NO NC Means】:NO means Normally Open: when the magnet separate, the circuit is conductive.
When the magnet together, the circuit is not conductive. NC means Normally Closed:When the magnet together, the circuit is conductive.
when the magnet separate, the circuit is not conductive..

10 Brown ABS Normally Open Door Contact Switch.
Will make Sense Door Closer at Roughly ¾” or 15mm.
This Contact Works with Any Access Control or Burglar Alarm System Available.
NORMALLY OPEN: When the door or window is open, the contact will give an closed signal and when the door is closed the contact will give a open (circuit) signal..