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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
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Amazon.com: Reed Switch Developments Corp, 2020-1960-10K, Magnetic Reed Sensor + Actuator Kit, Plastic, SPST - Form A, 60W 400V 3A, Qty: 1 Kit : Industrial & Scientific
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Amazon.com: 5Sets Magnetic Reed Switch, Magnetic Door Switch/Magnetic Contact Switch/Normally Open Closed NC NO Door Alarm Window Security, for DC 5V 12V 24V Light (Black-B31) : Industrial & Scientific
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