Wireless Driveway Alarm System

Using cutting-edge motion detection technology, this Wireless Driveway Alarm System alerts you audibly the moment someone approaches, ensuring you never miss a visitor or delivery. Durable, and waterproof, the infrared sensor—measuring 2.5" l x 2.25" w x 4.15" h—transmits up to a 400-foot range with motion detection activated within a 30-foot range. Place it at least 3' high above the ground; uses 3 AA batteries (not included). The indoor-only chime unit has 3 settings; uses 3 C batteries (not included); and measures 3.5" l x 1.5" w x 4.8" h. Includes mounting brackets and screws.