Combination Detector, Apartments and Mobile Homes;Houses Application, White, 5.63 In Diameter, +100°F;+38°C Maximum Operating Temperature, +32°F;0°C Minimum Operating Temperature, Universal Bracket Mounting Type, 1.75 In Overall Height, 1 BX Package Quantity, 85 DB Sound Level, California State Fire Marshal (CSFM);Housing and Urban Development (Hud) Federal Housing Authority (Fha);Iso 9001 Certified;National Fire Protection Association (Nfpa);Utgt/Utha/CZHF (Ul) Standards Met, 0.65 LB Weight