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Door/Window Sensor is not Properly Triggering

Written by Naomi Ramirez

Updated at August 27th, 2025

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Table of Contents

Step 1: Check Magnet Alignment Step 2: Test the Sensor in Your Hands Step 3: Watch for Metal Interference Step 4: Try Replacing the Battery Need Extra Help?

If your Door or Window Sensor isn’t responding, follow the steps below to get things working again


Step 1: Check Magnet Alignment

Make sure the two pieces of your sensor are installed less than ½ inch apart. If they’re too far apart, the sensor won’t register properly.


Step 2: Test the Sensor in Your Hands

  1. Gently remove both sensor pieces from the door or window.
  2. Hold one piece in each hand.
  3. Bring them together and pull them apart. This mimics the door or window opening and closing.

If your panel shows the sensor as “opened,” your sensor is working correctly! The issue is likely with how it was mounted.


Step 3: Watch for Metal Interference

If your door or window is metal, it can interfere with the sensor’s magnetic signal.

Fix it:
Swap the two pieces—place the magnet piece (the smaller one) on the non-metal surface. Then remount them with the correct spacing and test again.


Step 4: Try Replacing the Battery

Still not responding? Try a fresh battery:

  • Battery type: Two CR-2032 batteries
  • Remove the old batteries
  • Wait 30–40 seconds
  • Insert the new ones
  • Test the sensor again by imitating the open/close motion

Need Extra Help?

If you’ve tried all the steps above and your sensor still isn’t working, our Support Team is ready to help. Call us at 855-268-3669 or chat with us.

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Home Security
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  • Motion Detector
  • Glass Break Detector
  • Key Fob
  • Panic Button
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Environmental Detectors
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  • Eufy Indoor Camera
  • Eufy Outdoor Camera
  • Eufy Doorbell Camera
Services
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  • Cove Connect App
  • Professional Monitoring
  • RapidSOS
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