SkylinkHome SK-9 Wireless Motion Sensor Activated Indoor Screw-in Dimmable Light Socket Home Control Dimmer Kit for Wireless Home Automation Lighting Easy DIY (Do It Yourself) Installation Ambient Light Sensor (ALS) tracks natural lighting and can turn lights on and off accordingly Compatible with Incandescent and CFL bulbs. Up to 500 foot wireless range in open area (With use of SkylinkHome Remote Controls - sold separately) Motion Sensor range up to 40 feet with sensitivity setting adjustment option.