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3/4" Steel Door Recessed-Mount Magnetic Contact Switch
20Pair/Lot Wired Magnetic Door Window Contact Magnetic Sensor Reed Switch Alarm for Alarm System MC 38|alarm system|lot lotalarm switch - AliExpress
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Honeywell 940 - Magnetic Door Contact and Window Contact - Alarm Grid
China 12V 24V Electric Magnetic Door Contact Alarm Switch - China Magnetic Door Alarm Switch, Door Open Switch
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Magnetic Door Contact Switch, दरवाजे के कॉन्टैक्ट, डोर कॉन्टैक्ट - Sri Rajarajeswari Associates, Chennai | ID: 14122149797
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10 Magnetic Door Window Contact Reed Switch Alarm Security Ademco Honeywell | eBay
Wireless Magnetic Contact Sensor for Door / Window, use with IP-CAM-PT100 series - PI Manufacturing
How to Use a Magnetic Door Switch / Sensor With Arduino : 4 Steps - Instructables
3 pcs Door Contacts Surface Mount NC Security Alarm Window Sensors Wit
Overhead Magnetic Door Contact Reed Switch (BSD-3012) - China Magnetic Contact Switch, Magnetic Switch | Made-in-China.com
ATEX Magnetic Door Contacts | Hazardous Area Zone 1 & 2 Door Contact
Honeywell 943WG - Mini Magnetic Contact - Alarm Grid
Honeywell 949 - Surface Mount Magnetic Contact with Leads - Alarm Grid
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Uxcell Wired Door Contact Sensor N.O. Surface Mount Magnetic Reed Switch Black - Walmart.com
10pcs RC-33 NC Recessed Wired Door Contact Sensor Alarm Magnetic Reed Switch - Walmart.com
PFC48-1, PFC41-1 and PFC42-1: 3/4″ Recessed Magnetic Contact Series - Flair Electronics