First Alert Smoke and Carbon Monoxide Alarm, 85 dBA Sound Level, Ionization Sensor, Battery Power Source, White, Dimensions: 5.6 in L x 5.6 in W x 1.9 in H

Product Details
Color:White
Dimensions:5.6 in L x 5.6 in W x 1.9 in H
Power Source:Battery
Sensor Type:Ionization
Sound Level:85 dBA