MCarlton Automatic Lighting Motion-Activated Wall Switch with Remote HS3655 alerts you when someone enters Detection Zone! Ideal for coach lights and lanterns. Turns light on from your existing wall switch when motion is detected. Weather-sealed sensor mounts inside or outside. No wiring needed. Installs in minutes....no wiring needed. Product Details: Activates receiver switch from up to 50 feet away. Dependable - Can be used indoors or outdoors in temperatures of -20 degrees Fahrenheit to 120 degrees fahrenheit. 140 degree x 60 degree Detection Zone. Activation Switch allows day and might operation. Uses 4 AA alkaline batteries (NOT included). Timer switch allows choices of on-time: 6 seconds, 3 minutes and 10 minutes. Selectable code block interference from outside signals.