Philips Hue debuts security cameras and a contact sensor | TechHive
PHILIPS 390CCS Contact Cleaner Lubricant 200ml Oily Contact Cleaner Spray - Duinolk | The Biggest Arduino Online Store in Sri Lanka
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 Secure Contact Sensor: Setup and Configuration - Hueblog.com
Hue Smart Window and Door Contact Sensor | Philips Hue US
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