Amazon.com: Philips Hue Secure Smart Contact Sensor, Black - 1 Pack - Made for Indoor Doors and Windows - Requires Hue Bridge - Works with The Hue App : Everything Else
Philips Hue debuts security cameras and a contact sensor | TechHive
Philips Hue Secure Contact Sensor: Setup and Configuration - Hueblog.com
Philips 390CCS contact cleaner, 200ml. LAST UNIT AVAILABLE - Retroamplis
Amazon.com: Philips Hue Secure Smart Contact Sensor, White - 1 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 US