Philips Hue Smart Wireless Motion Sensor - White (473389) for sale online | eBay
Best Buy: Philips Hue Motion Sensor White 473389/464602
Philips Hue Outdoor Motion Sensor - 1 Pack - Turns Lights On When Motion is Detected - Weatherproof - Requires Hue Bridge - Compatible with Alexa, Apple HomeKit and Google Assistant - Amazon.com
Community Question of the Week: New lamps do not react to motion sensor - Hueblog.com