2nd generation contact quit working after 2 weeks of use.

Low battery light went on. Replaced batteries and still dead.

Hey @Surfpines. You may want to try walking through a factory reset and a new setup of the Contact Sensor to ensure that it is reading the new batteries correctly. You can find the steps for a factory reset in this Help Center Article here, alongside some other helpful troubleshooting tips. Let me know how those steps work for you! :slight_smile: