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20 Pcs) Plastic Magnet Sensor Door Open Detector Nc Relay Output Alarm Accessories Chest Lamp Switch - Window - AliExpress
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AliMed Basic Pull Cord Alarm
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Amazon.com: 2Sets Magnetic Reed Switch Normally Open Closed NC NO Door Window Security/Magnetic Door Switch/Magnetic Switch/Reed Switch for GPS,Alarm or Other Device,DC 5V 12V 24V : Electronics
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TANE Wired Side Lead Surface Mount Magnetic Contact WHITE Color Alarm Window Security Magnetic Door Switch Magnetic Contact Switch Reed Switch Normally Open Closed Loop + Listed FM-102-WH - FPC Security
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945T-WH Honeywell Home Hardwired Miniature Magnetic Door/Window Contact (w/Screw Terminals)
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4 Sets NC Wired Door Alarm Magnetic Contact Sensor with Double Tape : Industrial & Scientific
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Magnetic Contact Switch, Window / Sensor, Surface Mount
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Honeywell 5899B - Small for Wireless Door and Window Contacts - Alarm Grid
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TANE Wired Side Lead Surface Mount Magnetic Contact BROWN Color Alarm Window Security Magnetic Door Switch Magnetic Switch Reed Switch Normally Open + UL Listed FM-102-BR - Walmart.com
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Honeywell Mini Surface Mount Magnetic Contact with Screw Terminals Grid
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Medline Advantage - Safeway Medical Supply
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& window for intruder alarm systems | Eaton
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Patient Alert Magnet Fall Alarm Monitor | Secure Solutions
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Surface Mount Sensor Magnet - Zions Security Alarms
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945WH-M Alarm Magnet (for Any Non-Recessed Resideo Honeywell Home Wireless Door/Window Contact)
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Door/Window Entry Alarm Magnetic Sensor, of 2 - Household Alarms And Detectors Amazon.com
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GE Personal Security or Door Alarm, White, Pack
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Automatic Standalone Window Alarm - Magnetic Sensor and Loud Sound for Home
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Open Window | Home Security Accessories Ring
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10 Magnetic Alarm Contact Window / Door Surface Mount
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Amazon.com: Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor with Adjustable Bracket : & Home Improvement
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Open Window Slim Magnet Ring Alarm | Home Security Accessories | Ring
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Protekt® Magnet Alarm - Proactive Medical