Philips Hue Indoor Motion Sensor for Smart Lights Requires Hue Hub - New | eBay
Old or new motion sensor: How big is the difference? - Hueblog.com
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 570977 Motion Sensor Indoor Wall Mount no Drill, No Damage to Drywall/paint - Etsy
Philips 100-Degree White Screw-in Motion Sensor in the Motion & Light Sensor Adapters department at Lowes.com
Philips Hue Smart Wireless Motion Sensor - White (473389), ZigBee, Indoor Use 46677473389 | eBay