NO NC Wired Door Magnetic Contact Switch Alarm Reed Switches Door Sensor

Sopepoyie RC-36 NC/NO Recessed Wired Security Window Door Contact Sensor Brown Alarm Magnetic Reed Switch 5 Sets

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1 Pcs Brown Wired Door Contacts Surface Mount NC Security Alarm Door Window Sensors. These Door Contact Position Switches (Dcs) Work With All Access C

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5 Pcs White Door Contacts Surface Mount NC Security Alarm Door Window Sensors. These Door Contact Position Switches (Dcs) Work With All Access Control

5 Pcs Wired White Door Contacts Surface Mount NC Security Alarm Door Window Sensors. These Door Contact Position Switches (Dcs) Work With All Access C

Sentrol 2202AU-L Miniature Surface Mount Overhead Door Contact, 3" Gap Distance

Honeywell 958 Overhead Door Magnetic Contact Sensor, SPST Switch (Form A)

1 Door & Window Alarm Contact Switch Normally Closed, Wired Surface Mount-Brown

Seco-Larm Enforcer Overhead Door Magnetic Contact, Closed Loop (Sm-226Rq)

10 Pc White N.C. Recessed Door Contacts (Normally Closed) Alarm Door Window Sensors With Magnetic Reed Switch.

1 Pcs Door Contacts Grey Surface Mount NC Security Alarm Window Sensors. These Door Contact Position Switches (Dcs) Work With All Access Control And B

Tokatuker NC NO Magnetic Switch Wired Recessed Door Sensor Hidden Window Contact Reed Switch For Alarm System Access Control Replace

2Gig Thin Door/Window Contact White

Modular Door Jamb Contact Set (2 Contacts)

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1 Pcs Brown Door Contacts Surface Mount NC Security Alarm Window Sensors. These Door Contact Position Switches (Dcs) Work With All Access Control And

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Seco-Larm Enforcer Overhead Door Magnetic Contact, Closed Loop (SM-226RQ)