Well maybe not 10s, but 3s is still a terrible latency if you want to control something like lights for example. And it&#x27;s not all that uncommon for dhcp lease to last only a few hours (and we are talking about a case here when you use the button once every few days).<p>I used to be irritated with cheap led bulbs that took almost a second to light up. And with a wall switch you are pretty sure whether you flipped it or not. With such button during those 3s you&#x27;d be wondering whether you should press it again or not (unless it beeps or something like that).