Installation and setup not obvious if you have many devices on your network. The SAV Nest is reactive and advise you - once the problem included - unplug all your network devices to set the time! Weird but it works. Fortunately, not all manufacturers require their equipment to be alone on your network to be set up !!
Otherwise, it does what is described, aesthetics despite the size is correct; is the original can contact everywhere. Only the test is not controllable remotely: If the ceiling is high, you have to climb on a chair to make it sound bad ... for a product of this price.