![Amazon.com: 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 : Industrial Amazon.com: 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 : Industrial](https://m.media-amazon.com/images/I/51YSsRTfSlS._AC_UF894,1000_QL80_.jpg)
Amazon.com: 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 : Industrial
![3 pcs Brown Wired Door Contacts Surface Mount NC Security Alarm Door Window Sensors. These Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems - Walmart.com 3 pcs Brown Wired Door Contacts Surface Mount NC Security Alarm Door Window Sensors. These Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems - Walmart.com](https://i5.walmartimages.com/asr/75a46a6e-d439-4467-9bd7-4e59a7564494.64a89221e55f6b9769749a5b3ff116fa.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
3 pcs Brown Wired Door Contacts Surface Mount NC Security Alarm Door Window Sensors. These Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems - Walmart.com
![Amazon.com: Wired Metal Door Window Magnetic Contact Sensor Detector Switch Alarm Home Garage Security Kit : Tools & Home Improvement Amazon.com: Wired Metal Door Window Magnetic Contact Sensor Detector Switch Alarm Home Garage Security Kit : Tools & Home Improvement](https://m.media-amazon.com/images/I/51J+BYOBokL.jpg)
Amazon.com: Wired Metal Door Window Magnetic Contact Sensor Detector Switch Alarm Home Garage Security Kit : Tools & Home Improvement
![Wireless Digital Door / Window Alarm with Programmable Security Keypad (Model PPS-SF021) – Vigilant Personal Protection Systems by Mace Wireless Digital Door / Window Alarm with Programmable Security Keypad (Model PPS-SF021) – Vigilant Personal Protection Systems by Mace](https://www.vigilantpps.com/cdn/shop/products/PPS_220AK__96680.1432070299.1280.1280_large.png?v=1456697515)
Wireless Digital Door / Window Alarm with Programmable Security Keypad (Model PPS-SF021) – Vigilant Personal Protection Systems by Mace
![Mc52 No Nc 12vdc Wired Door Window Sensor Magnetic Switch Home Alarm System Door Lock Use - Window Door Sensor - AliExpress Mc52 No Nc 12vdc Wired Door Window Sensor Magnetic Switch Home Alarm System Door Lock Use - Window Door Sensor - AliExpress](https://ae01.alicdn.com/kf/HTB1duyUbLBj_uVjSZFpq6A0SXXae/MC52-NO-NC-12VDC-Wired-Door-Window-Sensor-Magnetic-Switch-Home-Alarm-System-door-lock-use.jpg)
Mc52 No Nc 12vdc Wired Door Window Sensor Magnetic Switch Home Alarm System Door Lock Use - Window Door Sensor - AliExpress
![Amazon.com: 10pcs NC Recessed Wired Door Window Sensor Magnetic Switch for Home Security Alarm System : Tools & Home Improvement Amazon.com: 10pcs NC Recessed Wired Door Window Sensor Magnetic Switch for Home Security Alarm System : Tools & Home Improvement](https://m.media-amazon.com/images/I/51sdEOwYjgL._AC_UF894,1000_QL80_.jpg)
Amazon.com: 10pcs NC Recessed Wired Door Window Sensor Magnetic Switch for Home Security Alarm System : Tools & Home Improvement
![Amazon.com: Wired Metal Door Window Magnetic Contact Sensor Detector Switch Alarm Home Garage Security Kit : Tools & Home Improvement Amazon.com: Wired Metal Door Window Magnetic Contact Sensor Detector Switch Alarm Home Garage Security Kit : Tools & Home Improvement](https://m.media-amazon.com/images/I/71vCgHJH6fL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Wired Metal Door Window Magnetic Contact Sensor Detector Switch Alarm Home Garage Security Kit : Tools & Home Improvement
![Tebru Alarm Sensor, Alarm Detector,Wired Rolling Door Magnetic Contact Sensor Anti-theft Accessories for Security Alarm System - Walmart.com Tebru Alarm Sensor, Alarm Detector,Wired Rolling Door Magnetic Contact Sensor Anti-theft Accessories for Security Alarm System - Walmart.com](https://i5.walmartimages.com/asr/c58478a2-77e3-416e-b71b-608944c46c5d_1.de4ee5453cad013620db99c7f5c9a6bb.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Tebru Alarm Sensor, Alarm Detector,Wired Rolling Door Magnetic Contact Sensor Anti-theft Accessories for Security Alarm System - Walmart.com
![TANE Wired Surface Mount Magnetic Door Window Contact Switch with Hidden Wires + Screws WHITE Color Reed Switch Normally Open Alarm Security, Home Security, Burglar Alarm Systems + UL Listed GP-23-WH - TANE Wired Surface Mount Magnetic Door Window Contact Switch with Hidden Wires + Screws WHITE Color Reed Switch Normally Open Alarm Security, Home Security, Burglar Alarm Systems + UL Listed GP-23-WH -](https://fpcsecurity.b-cdn.net/wp-content/uploads/2021/08/surface-mount-contact-front-GP-23-WH-tane.jpg)
TANE Wired Surface Mount Magnetic Door Window Contact Switch with Hidden Wires + Screws WHITE Color Reed Switch Normally Open Alarm Security, Home Security, Burglar Alarm Systems + UL Listed GP-23-WH -
![Carevas Wired Door Window Magnetic Sensor Intrusion Detector Reed Switch Alarm For Alarm System - Walmart.com Carevas Wired Door Window Magnetic Sensor Intrusion Detector Reed Switch Alarm For Alarm System - Walmart.com](https://i5.walmartimages.com/asr/f4696ad4-622e-4aff-80a6-2032adfd44f9.85e30116a0b7c553fbf9b688b5eadc46.jpeg)
Carevas Wired Door Window Magnetic Sensor Intrusion Detector Reed Switch Alarm For Alarm System - Walmart.com
![1Pack/Set Wired Door Window Sensor Detector Magnetic Switch Normally Closed Nc for Our Home Alarm System Wifi Garage Door Opener - Walmart.com 1Pack/Set Wired Door Window Sensor Detector Magnetic Switch Normally Closed Nc for Our Home Alarm System Wifi Garage Door Opener - Walmart.com](https://i5.walmartimages.com/asr/83711ab6-2341-47ea-b417-9dbdb0cf0505.823a6fb138453d4c81b8f27a5dc7a74b.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)
1Pack/Set Wired Door Window Sensor Detector Magnetic Switch Normally Closed Nc for Our Home Alarm System Wifi Garage Door Opener - Walmart.com
![Wired Door Window Sensor detector Magnetic Switch normally Closed NC for our Home security Alarm System Wired Door Window Sensor detector Magnetic Switch normally Closed NC for our Home security Alarm System](https://cdn.cloudbf.com/thumb/format/mini_xsize/files/105/img/2022/12/28/202212281048440198888.jpg.webp)
Wired Door Window Sensor detector Magnetic Switch normally Closed NC for our Home security Alarm System
![Wireless Digital Door / Window Alarm with Programmable Security Keypad (Model PPS-SF021) – Vigilant Personal Protection Systems by Mace Wireless Digital Door / Window Alarm with Programmable Security Keypad (Model PPS-SF021) – Vigilant Personal Protection Systems by Mace](https://www.vigilantpps.com/cdn/shop/products/PPS_220AK__96680.1432070299.1280.1280_grande.png?v=1456697515)