I bought 2 of these to use with the Samsung Smart Hub. The pairing process was very easy and took less than a minute. You should log into your hub and update your device handler to take full advantage. The response time from the sensor unit to the hub is very fast. In most cases less than 1 second. After I received the device, the seller contacted me via email asking for feedback on my satisfaction. I first found that the coverage area met my expectations, which is why I mentioned it in my answer. After a bit of troubleshooting, the seller responded by offering to send me a wall unit to test instead. The wall unit worked great so he offered to replace both of the ceiling sensors I had purchased with a wall unit model at no additional cost for units or shipping. Of course, if you are unsatisfied for any reason, this seller has excellent customer service and you will take care of it. This product works great and I ended up using it in a different usage scenario. The wall sensor was better for the application I was originally working on. So. When in doubt, fear no more. Buy this product with the knowledge that it works great and if you are not satisfied for any reason, the seller will support you.
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