The first one I got paired easily to Smartthings hub and worked great for 24 hours

This is not an easy pairing with your SmartThings hub.

Once re-paired, they work for another several days until they lock up and need re-pairing with the hub again.

Works great and easily pairs with smartthings.

Will be replacing my older no-name sensors as they die.

The manufacturer states that battery life can be up to three years and, if that's the case, I'm not worried as I replace batteries once a year on HA, smoke, fire, and CO2 detectors

For the price and the for the positives I have learned to live with the.