Reviews Pretend Closed circuit System

Flair Electronics Recessed Contact, Wire Leads, VIP94-2 (10 Pack)

5 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..

Work as an anti-theft alarm, ideal for metal door and window.
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 ).
These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system.

3.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 ).
4.Work as an anti-theft alarm, ideal for metal door and window.
5.These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system.

This Contact Works with Any Access Control or Burglar Alarm System Available.
Great for use in family and factory window, door. etc..
NO means Normally Open: when the magnet separate, the circuit is conductive( light on ).
When the magnet together, the circuit is not conductive (light off).
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).

1.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 ). When make order,pls check carefully!.
Max.Working Voltage: 100V,Contacts Status : NC (Normally Closed).
package Content : 6x Door Magnetic Switch.
5.These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system..

[Dimension] - Cable Length:300 mm；Sensing Distance: 25-35 mm.
Total Size: 49 x 19 x 9.8mm / 1.93" x 0.75" x 0.39" (L*W*H).
[Normally Closed] - 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 )..
[Material] - The magnetic reed switch alarm is with durable zinc alloy housing for better rust resistance.
[Widely Used] - Magnetic Reed Switch Alarm works with any access control or burglar alarm system available.

[Dimension] - Cable Length:250 mm；Sensing Distance: 15-25 mm；Total Size: 27mm x 28mm x 7.5mm / 1.06" x 1.1" x 0.3"(L*W*H).
[Normally Closed] - 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 )..
[Widely Usedl] - This Door Contact Sensor works with any access control or burglar alarm system available.
[Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.

[Dimension] - Cable Length:250 mm；Sensing Distance: 15-25 mm；Total Size: 27mm x 28mm x 7.5mm / 1.06" x 1.1" x 0.3"(L*W*H).
[Normally Closed] - 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 )..
[Widely Usedl] - This Recessed Door Contact Sensor works with any access control or burglar alarm system available.
[Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.

[Dimension] - Cable Length:250 mm；Sensing Distance: 15-25 mm；Total Size: 27mm x 28mm x 7.5mm / 1.06" x 1.1" x 0.3"(L*W*H).
[Normally Closed] - 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 )..
[Widely Usedl] - This Recessed Door Contact Sensor works with any access control or burglar alarm system available.
[Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.

Total Size: 50mm x 14mm x 14mm / 1.97" x 0.54" x 0.54"(L*W*H).
[Normally Closed] - 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 )..
[Widely Used] - This Door Contact Sensor works with any access control or burglar alarm system available.
[Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.