![Amazon.com: 1 pcs NO White Door Contacts (Normally Open) Surface Mount Security Alarm Door Window Sensors.These ¾” Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems : Amazon.com: 1 pcs NO White Door Contacts (Normally Open) Surface Mount Security Alarm Door Window Sensors.These ¾” Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems :](https://m.media-amazon.com/images/I/51RBeqzXqLL._AC_UF894,1000_QL80_.jpg)
Amazon.com: 1 pcs NO White Door Contacts (Normally Open) Surface Mount Security Alarm Door Window Sensors.These ¾” Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems :
![Source Hot Selling Wired Normally Open/Closed Metal Door Magnetic Contact Switches Sensor For Home Burglar Alarm Safety on m.alibaba.com Source Hot Selling Wired Normally Open/Closed Metal Door Magnetic Contact Switches Sensor For Home Burglar Alarm Safety on m.alibaba.com](https://sc04.alicdn.com/kf/H6ffac4e8d0d142fdb3c6d6bf60503828W.jpg)
Source Hot Selling Wired Normally Open/Closed Metal Door Magnetic Contact Switches Sensor For Home Burglar Alarm Safety on m.alibaba.com
![Wired Door Window Sensor Magnetic Switch for Home Alarm System, When Sensor Together, Normally Closed Nc - China Magnetic Contact, Magnetic Switch | Made-in-China.com Wired Door Window Sensor Magnetic Switch for Home Alarm System, When Sensor Together, Normally Closed Nc - China Magnetic Contact, Magnetic Switch | Made-in-China.com](https://image.made-in-china.com/202f0j00UIsRfzDtvCqS/Wired-Door-Window-Sensor-Magnetic-Switch-for-Home-Alarm-System-When-Sensor-Together-Normally-Closed-Nc.webp)
Wired Door Window Sensor Magnetic Switch for Home Alarm System, When Sensor Together, Normally Closed Nc - China Magnetic Contact, Magnetic Switch | Made-in-China.com
![Amazon.com: Burglar/Anti-Intrusion Trip Alarm, Solar Outdoor Indoor Sound and Light Siren, 129dB DIY Home/Camping/Portable Security Alarm for Deter intruders, Security Arming,etc. 328 Ft Pull Wire Magnetic Switch : Everything Else Amazon.com: Burglar/Anti-Intrusion Trip Alarm, Solar Outdoor Indoor Sound and Light Siren, 129dB DIY Home/Camping/Portable Security Alarm for Deter intruders, Security Arming,etc. 328 Ft Pull Wire Magnetic Switch : Everything Else](https://m.media-amazon.com/images/I/41DZtxy9M-L.jpg)
Amazon.com: Burglar/Anti-Intrusion Trip Alarm, Solar Outdoor Indoor Sound and Light Siren, 129dB DIY Home/Camping/Portable Security Alarm for Deter intruders, Security Arming,etc. 328 Ft Pull Wire Magnetic Switch : Everything Else
![Amazon.com: Aoje-Link RC-36 NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch for Home Security Access Control and Burglar Alarm Systems Brown 8pcs : Industrial & Scientific Amazon.com: Aoje-Link RC-36 NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch for Home Security Access Control and Burglar Alarm Systems Brown 8pcs : Industrial & Scientific](https://m.media-amazon.com/images/I/71j+tyW5MpL.jpg)
Amazon.com: Aoje-Link RC-36 NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch for Home Security Access Control and Burglar Alarm Systems Brown 8pcs : Industrial & Scientific
![TANE Wired Surface Mount Magnetic Door Window Contact BROWN Color Magnetic Contact Switch Reed Switch Alarm Security, Home Security, Burglar Alarm Systems + UL Listed SM-20-WG-BR-PK25 (Pack of 25) - Walmart.com TANE Wired Surface Mount Magnetic Door Window Contact BROWN Color Magnetic Contact Switch Reed Switch Alarm Security, Home Security, Burglar Alarm Systems + UL Listed SM-20-WG-BR-PK25 (Pack of 25) - Walmart.com](https://i5.walmartimages.com/asr/1ecee22b-2ed3-4670-87cb-451a414107e1.879d6616122ec0630c40d70b982801bd.jpeg?odnHeight=2000&odnWidth=2000&odnBg=FFFFFF)
TANE Wired Surface Mount Magnetic Door Window Contact BROWN Color Magnetic Contact Switch Reed Switch Alarm Security, Home Security, Burglar Alarm Systems + UL Listed SM-20-WG-BR-PK25 (Pack of 25) - Walmart.com
![TANE Wired Surface Mount Magnetic Door Window Contact WHITE Color Magnetic Contact Switch Reed Switch Normally Open Alarm Security, Home Security, Burglar Alarm Systems + UL Listed SM-20-WG-WH - Walmart.com TANE Wired Surface Mount Magnetic Door Window Contact WHITE Color Magnetic Contact Switch Reed Switch Normally Open Alarm Security, Home Security, Burglar Alarm Systems + UL Listed SM-20-WG-WH - Walmart.com](https://i5.walmartimages.com/asr/05589641-bbb2-4831-8386-e5bb5262b589.69b407accc69157c88491c060f0ad0f1.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
TANE Wired Surface Mount Magnetic Door Window Contact WHITE Color Magnetic Contact Switch Reed Switch Normally Open Alarm Security, Home Security, Burglar Alarm Systems + UL Listed SM-20-WG-WH - Walmart.com
![Amazon.com: Magnetic Reed Switch MC-31B NC/NO Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 5, Black : Tools & Home Amazon.com: Magnetic Reed Switch MC-31B NC/NO Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 5, Black : Tools & Home](https://m.media-amazon.com/images/I/61yz0ayiYJL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Magnetic Reed Switch MC-31B NC/NO Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Systems, Sets of 5, Black : Tools & Home
![TANE Wired Surface Mount Magnetic Door Window Contact BROWN Color Magnetic Contact Switch Reed Switch Normally Open Alarm Security, Home Security, Burglar Alarm Systems + UL Listed SM-20-WG-BR - FPC Security TANE Wired Surface Mount Magnetic Door Window Contact BROWN Color Magnetic Contact Switch Reed Switch Normally Open Alarm Security, Home Security, Burglar Alarm Systems + UL Listed SM-20-WG-BR - FPC Security](https://fpcsecurity.b-cdn.net/wp-content/uploads/2021/08/surface-mount-contact-front-SM-20-WG-BR-tane.jpg)
TANE Wired Surface Mount Magnetic Door Window Contact BROWN Color Magnetic Contact Switch Reed Switch Normally Open Alarm Security, Home Security, Burglar Alarm Systems + UL Listed SM-20-WG-BR - FPC Security
![Contact Magnetic Sensor Reed Switch Alarm | Door Contact Magnetic Reed Switch Alarm - Automatic Door Operators - Aliexpress Contact Magnetic Sensor Reed Switch Alarm | Door Contact Magnetic Reed Switch Alarm - Automatic Door Operators - Aliexpress](https://ae01.alicdn.com/kf/S56741d78221f4726bb88474925460ac6P/72XD-Magnetic-Door-Window-Contact-Sensor-Alarm-Reed-Switch-Security-Burglar-Alarm.jpg)