Amazon.com: Philips Hue Secure Smart Contact Sensor, White - 2 Pack - Made for Indoor Doors and Windows - Requires Hue Bridge - Works with The Hue App : Everything Else
Hue Smart Window and Door Contact Sensor | Philips Hue
Philips Smart Motion Sensor for Philips Smart Wi-Fi WiZ Wireless Connected Light Bulbs 560771 - The Home Depot
Philips Compatible Reusable Temperature Probe 21078A Adult Skin Sensor