Welcome to our store 1The design is novel, the detection angle is 120 degrees, more wider to detect. 2Ceiling installation is extremely simple and convenient, works more effectively. 3Wide range of applications, suitable for gas, natural gas, smoke alarms and so on. 4The detection range and distance is about 22m/22yd, to better meet your needs. 5Made of high quality ABS materials with stable performance, have a longer service life. Specification Item Type: Sound Light Fire Alarm Material: ABS Working Voltage: 9-24V Alarm Current: 100-300mA Quiescent Current: 10A Type: Siren Detection Angle: 120 Degrees Detection Distance: Approx. 20m/22yd Installation Method: Ceiling Type Working Temperature: -10 to +50 Application: Gas, natural gas, smoke alarm Package List 1 x Sound Light Fire Alarm 1 x Screw Installation Package 1 x Bottom Fixing Plate 100% Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservic