Philips Hue Secure Contact Sensor, Set of 2

Hue Secure Contact Sensor, 2-pack. The Hue Secure Contact Sensor gives you peace of mind, both at home and on the go. Place it using the included self-adhesive backing on doors, windows, cabinets, safes, or elsewhere. When the object that the contact sensor is attached to is opened, you will receive a notification or the light will turn on.