The Glow Dreaming Glow Perfect Sleep Sensor will set the perfect conditions for a great nights sleep. Temperature and humidity are the two most critical factors you can control in any baby's room, and the Glow Perfect Sleep Sensor allows you to monitor this from anywhere in the house, ensuring conditions are always conducive for safe and comfortable sleep. Their smart sensor technology will inform you of the best TOG based on the conditions of your little one's sleep space, not based on the weather outside.Easy to set up and use with each sensor being fully portable.