2 out of 4 Stopped working...

These were really great at first, but two out of the four that I ordered have already stopped working. The two that work are great, love the app and the fact that they work with Alexa. One glitch was that I had to give them unique names because Alexa was having a hard time distinguishing between my devices. When the first one broke Amazon was really great about it. I think this time with the second one I'm going to call the manufacturer.

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