First Alert SFA265 Indoor Motion Sensor LED Lights, 4 Pack Passive Infra-red Motion Detector, Automatic Motion Sensor - Automatically Turns on When Motion is Detected Auto Shut-off - Automatically Shuts-off After 30 Seconds When No Movement is Detected 3-Position Light Switch: Auto/On/Off Mounting Bracket with Optional Peel and Stick Adhesive Pad Included Power: 3 x AAA (UM-4) Batteries (not included)