9120 Collection Contractor Pack 120 Volt Hardwired Smoke Alarm with Battery Back Up, Latching Alarm Indicator, Smart Technology, Perfect Alignment Mount The 9120 Series smoke detector have actually been developed to install much faster, execute much better and also are smarter than previously. These enhancements help in reducing problem alarm systems and also save you time and also cash. Features: Multiple terminal smoke detector specifically developed for domestic and also industrial usage Redesigned cover, metal picking up chamber and also new incorporated circuit interact to reduce problem alarm systems Perfect place hvac system includes a gasket much less base and also mounting bracket that keeps the alarm system safe and secure over a vast turning range to allow for true alignment Single switch test and also silence removes confusion Easy access side-load battery drawer, setup and also extraction could take place while the system is installed to the ceiling or wall via the side load batter area Battery backup power supply keeps alarm system working throughout a power failing, supplying battery is installed correctly and also is fresh battery theft and also or theft of the system and also link to A/C power is made with a quick-connect circuitry harness for setup that is fast and also very easy 9 volt battery included Specifications: Meets UL criteria with an 85dB horn You could install BRK Brands, Inc. items with self-confidence! Our items are developed to save lives. It's an obligation we don't play around. We develop each smoke detector, carbon monoxide gas alarm system, warmth alarm system, and also fire extinguisher to the highest criteria. Throughout the years we've seen rivals come and also go. We're still here, still making one of the most identified customer brand names of smoke and also Carbon Monoxide alarm systems on the marketplace.