1、Multipurpose: Car alarms (interior), warehouse monitors, supply cabinet alarms, garage and tool shed monitors, mailbox sensors, front door or sidewalk detection. 2、Motion Detection: Detect any movement within the detection range. Perfect for long or hidden driveways and allows you a fore warning when guests (or intruders) are approaching. 3、Applicable Occasion: This driveway alarm door sensor can be successfully used for your home, office, shop, hotel or other buildings. 4、Easy to Install: This one has no complicated wires, no installation hassles, and the sensor can be hung on the wall. You just need to put the wireless motion sensor and alarm receiver anywhere you like. 5、Prime Material: This driveway alarm door sensor is made of premium ABS material, durable and not easy to damage, can be used for a long time, bring good use experience. Item Type: Wireless Driveway Alarm Door Sensor Material: ABS Weight: 300g / 10.58oz Acceptance Distance: 200-300 meters Low Sensitivity: 5-8 meters Medium Sensitivity: 8-12 meters High Sensitivity: 13-16 meters Working Frequency Band: 433MHz FSK Detection Angle: 120 degree Battery Type: 472540 polymer 500mAh (included) Solar Panel Specifications: Monocrystalline silicon 5.5V 100mAh Music: 38 songs Volume: 4 speed volume adjustment (high, medium, low, mute) 1 x Detector 1 x Receiver 1 x Mount 1 x Instructions 5 x Screws 5 x Expansion Tubes 1 x Card Pins