Very pleased with this product, does exactly what I wanted it to do and the whole process from receiving the product, booking an installation slot and the handover from the British Gas engineer was excellent, I had to wait a bit longer than I holed for an installation slot, but it was worth the wait.We have a very complex heating system and the engineers face was a picture when he saw it, but some detailed analysis and a couple of phone calls later and he'd got it cracked and all the way through the process he was cheerful and friendly and said no matter how long it took he wouldn't leave until it was all working and fully tested, he even had a a special fitting plate to cover the gap left by our old timer (the hive one is square rather than rectangular) so the fitting was neat and tidy.Looking forward too what other home automation products are added to the Hive system