sinopetech.com/en

In the past I’ve had some issues with quantity ordered, but it has always been easily resolved, and proper count received

The 4 thermostats were delivered quickly.

Already wrote the review.

Easy to use but some time a device disconnects and I have to activate it again . Also the option to feel when you are at home is not working

The product is great, pretty much plug and play. I have not yet tested the technical support as there was no need so cannot comment on it but I am very satisfied with the product.