10pcs Magnetic Cylindrical Plastic Sealed Reed for PROXIMITY Switch Replacement

2 Sets Magnetic Reed Switch - The Ultimate Door Alarm & Window Security Solution

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2Sets Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window

5 pair MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System

5Pair MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System

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5Pair White MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System