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Amseco AMS-37L Industrial Magnetic Contact with 24" Leads - Gray - TremTech Electrical Systems
Honeywell 940 - Magnetic Door Contact and Window Contact - Alarm Grid
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PFC48-1, PFC41-1 and PFC42-1: 3/4″ Recessed Magnetic Contact Series - Flair Electronics
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Honeywell 949 - Surface Mount Magnetic Contact with Leads - Alarm Grid
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Magnetic Contacts - Normally Open - Smartenit
No/nc Wired Door Magnetic Contact Switch Alarm Reed Switches Door Sensor For Home Alarm System Access Control System - Window Door Sensor - AliExpress
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How to connect a magnetic door contact switch to your alarm - tutorial - YouTube
UL Approved Plastic Magnetic Contacts Door Sensor BS-2025 - China Surface Mount Switch and Burglar Alarm Magnetic Contact
Honeywell 7939-2 - Surface Mount Door Contact and Window Contact - Alarm Grid
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GE Security 1078C-N Recessed Magnetic Steel Door Contact w/ Wire Leads - Closed Loop, White
Contact Sensors
How to Use a Door Contact Sensor
