Amazon.com: Philips Hue Secure Smart Contact Sensor, Black - 2 Pack - Made for Indoor Doors and Windows - Requires Hue Bridge - Works with The Hue App : Everything Else
Philips Hue Smart Wireless Motion Sensor - White (473389), ZigBee, Indoor Use 46677473389 | eBay
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
Philips Hue Motion Sensor Review: A Must For Hue Owners
Philips Hue integration: Indoor Motion Sensors: Light level not available : r/homeassistant