My 2nd gen Ring alarm has been working reliably for a long time but today a motion sensor reported a (false?) event and remained in this state. The alarm system went off and luckily I was able to disable it, bypass this stuck sensor, and re-enable the alarm system. I was only able to clear the sensor stuck detection by re-installing the batteries. I’m concerned this failure could happen and so suddenly. The motion sensor is set to lowest detection setting, not pointed at any heat sources (eg windows), has a full battery, and has been trouble-free for a long time. Any thoughts? If this happens again, I will request a replacement.

Hi @dagold63. That definitely sounds strange. I suggest [performing a Factory Reset](https://support.ring.com/hc/en-us/articles/360000071906-How-to-Factory-Reset-Your-Ring-Alarm-Devices) on the Motion Detector and monitoring its behavior. If this happens again, follow up with our support team. Please give our support team a call at one of the numbers available [here](https://support.ring.com/hc/en-us/articles/213608406). If you are outside of the US, please visit [here ](https://support.ring.com/hc/en-gb/articles/213608406)to see how to contact support.

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Dezember 03, 2025

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