This was the first of two door sensors I bought from this brand, the second is the Wi-Fi version. Both versions are very unreliable, but this one is far worse. I spent minutes if not hours playing around with it and trying to pair and connect it through the Alexa app. The Smart Life app couldn't even find it. It just said I need to connect the hub first and my Echo Studio's hub can't be found either. Alexa was the only app I could find but couldn't reliably get it to work. The magnet and sensor were perfectly aligned and almost in contact. I then bought their Wi-Fi version and got slightly better results, but they didn't last long. After a few days it stopped working too. I ended up buying another brand that claims a 1/4 mile range. It's about three times the price of this one, but it works great and comes with a hub and two sensors.
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