Sensor Wireless Chime GC250 OK for outdoor installation Power supply: 90db For customer service and crime prevention Built-in magnet (can be attached to iron parts with one touch) *We do not offer price reductions. The sensor detects human movement, and the chime or warning sound activates on the spot. By narrowing the detection range, you can reliably monitor the targeted area. Can be used in various situations Equipped with a rich sound of 16 patterns. ・7 types of chime sounds, 4 types of melodies, 2 types of bird and dog sounds Convenient for knowing when customers enter from the doors of stores and offices. Also for crime prevention measures for houses, windows, entrances, balconies, carports, etc... Can be used for all kinds of purposes. Manufacturer: REVEX Product Name: Spot Human Sensor Chime Installation method: Built-in magnet, screw fixation, double-sided tape Size: 5 x 6.4 x 8.3cm Body weight: 82g Power supply: 3 AAA alkaline batteries (sold separately) or AC adapter (X0505, sold separately) Sensor: Infrared sensor, Variable monitoring direction sensor Detection range: 12 degrees x (20-80 degrees) x 3m Volume variable range: 55dB～90dB/1m Operating temperature range: -10～+40 degrees Set contents: GC250 main unit x 1, Lens cover x 2, Mounting plate x 1, Mounting wood screws x 2, Resin ribs x 2, Double-sided tape x 1, Instruction manual x 1