Sensibo Room Sensor for Room-by-Room Climate Control

What you get is air conditioning that stops wasting energy on empty rooms. The sensor watches temperature and humidity around the clock, and its motion sensor tells the Air when someone walks in — so the AC starts when the room is occupied and stops when it is not, instead of cooling an empty space all afternoon. Over weeks that adds up to real savings on the part of the power bill that air conditioning usually dominates. Placement is painless: it is wireless and battery powered, so it goes on a shelf, a wall with tape, or its own stand, wherever the room’s climate actually matters — not where the controller happens to be. The Sensibo app turns its readings into trends you can see, and it plays nicely with Google Home, Alexa, Apple HomeKit, SmartThings and IFTTT, with an open API for people who like to build their own routines. Buy one sensor for the bedroom that never cools down, and add more rooms later.