Replacing Contact Sensor and Motion Detector batteries (1st Gen)

Learn best practices on how to replace the battery of your Contact Sensor and Motion Detectors. For additional information on the current state of a particular device’s battery, controls, history, and battery power levels, visit the device’s Device Health page in the Ring app.

Battery Level: If a device reports battery levels, the battery status will be shown in the top right.

  • Green = good (26-100%)
  • Yellow = low (11–25%)
  • Red = warning (1–10%)
  • Red with a line through it = empty (0%)

Replacing the battery on your Motion Detector (1st Generation)

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What type of battery does the Motion Detector use?

Ring Motion Detector (1st Gen) uses one CR123A battery.

How long does the battery last?

The battery can last up to three years.

How to replace the battery

Note: You do not need to take down the device in order to replace the battery.

  1. Press the cover release and remove the cover from your motion sensor.
  2. Remove the battery.
  3. Place the new battery back in the device. 
  4. Put the cover back on the device. 

Do you have a Motion Detector (2nd Generation)? Learn more about how to replace your battery.

Replacing the battery on your Contact Sensor (1st Generation)

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What type of battery does the Contact Sensor (1st Gen) use?

Ring Alarm Contact Sensor (1st Gen) uses one CR123A battery.

How long does the battery last?

The battery can last up to three years, depending on use.

How to replace the battery

Note: You do not not need to take down the device in order to replace the battery.

  1. Press the cover release and remove the cover from the device.
  2. Remove the battery from the device. 
  3. Place the new battery in the device. 
  4. Put the cover back on the device.  

Do you have a Contact Sensor (2nd Generation)? Learn more about how to replace your battery here.

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