DescriptionIf you are looking for a professional and affordable smoke alarm, then your research is over here. That's because our smoke alarm can meet your need. Adopted of plastic material, it is practical and durable for long time use. It is not easy to get deformed and bring you much convenience.Features-Color:White -Material:Plastic -Size:10.00X10.00X3.50cm/3.93X3.93X1.38in -Power supply: 2AA battery (not included) -Alarm current: less than 120 (mA) -Static current: less than 15 (uA) -Alarm mode: Audible and visual alarm -Buzzer: 3 meters 88dB - Fast sensing time, this smoke alarm can effectively alert you in time and protects your safety better. - Made of plastic materials, light weight for easy taking and installation, durable and long-lasting use. - Professional fire alarm, reliably detects smoke from fast flaming fires and alerts you with a decibel alarm. - Proper for using in house, shop, hotel, restaurant, office building, school, bank, library, computer house and more places. - The alarm will continue until the air is cleared or the test button is released, practical and durable.