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
Best Buy: Philips Hue Motion Sensor White 473389/464602
Review: Philips Hue Outdoor Sensor is the first outdoor motion detector for HomeKit | AppleInsider
Amazon.com: Philips Hue White and Color Ambiance Discover Outdoor Flood Light Fixture - 1 Pack - Weatherproof - Requires Hue Bridge - Works with Amazon Alexa, Apple HomeKit and Google Assistant : Everything Else