Doberman Security SE-0104-2PK Motion Detector Alarm/Chime - 2 Pack (Silver/Black)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>INFRARED TECHNOLOGY - This detector uses infrared sensors to detect motion and trigger the loud 100 dB alarm (can select from either alarm or chime sound)</li><li>WIDE COVERAGE - Sensors cover a wide area: 15 feet out from the unit， 60 degrees vertically and horizontally.</li><li>EASY INSTALLATION W/ ADJUSTABLE MOUNT - Allows you to easily position/mount the device anywhere inside or outside the house， room， office， or garage. Adjustable swivel mount allows rotating of unit up to 270 degrees.</li><li>PERFECT FOR INDOOR &amp; OUTDOOR PROTECTION - Safely prevent young children， wandering elderly， or pets from passing through entrances and pathways.</li><li>USES 9 VOLT BATTERY - Not included</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41CK0JjGwQL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41AgzDIEEEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31pNrx4zxVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31CtgVZT5yL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51TKyhttrNL.jpg" noproxy>