Contact Sensor Disappeared

I have ring alram setup for more than 1 year and all of sudden one of my door sensor disappeared from it.

It was on back door and was set to trigger without any delay, someone opened the door and alram didn’t trigger (it was in home mode and suppose to trigger alarm).

I double checked and contact sensor is there on the door and missing in the app. It is security hazard.
I don’t know when it disappeared and what is wrong with it, there was no warning or indication and I am shocked that this would have created a threat during emergency.

I tried manually and sensor doesn’t even chirp anymore.

I can’t turst this system anymore. Any pointers?


Hey @adawra. It sounds like there may be a concern with the sensor itself that should be looked at by our support team. Could you please give our support team a call at one of the numbers available here? We’re taking additional steps to protect our team and help reduce the spread of COVID-19. This has resulted in longer than normal wait times. If you are outside of the US, please read our response to COVID-19 here to see how to contact support. Let me know what they were able to discover, and how they got this addressed for you!

I had the same experience; a contact sensor disappearing from the system, which should never happen. Ring Support was unable to explain what would cause this anomaly. The solution was to add the Contact Sensor back into the Alarm System. In my case once it was successfully added back I received a low battery indicator. Low battery should not cause a properly designed alarm system to purge a device and leave the unsuspecting homeowner with a hole in there security system (I do not know if battery level was the cause of this anomalous behavior).