The side-load battery compartment makes changing the 9-volt battery simple. The First Alert Combination Smoke and Carbon Monoxide Alarm integrates with existing wiring and features a universal mounting bracket that makes installing the unit quick and easy. The latching alarm indicator on the CO smoke alarm automatically identifies which unit initiated the alarm–even after the conditions that set off the alarm have subsided. Interconnect: Can be linked with up to 18 units (12 Smoke, 6 CO/Heat/Relay) Intelligent Sensing Technology: Helps reduce nuisance alarms. Once one alarm is triggered, all connected CO smoke alarms will sound. Buy First Alert SC9120B Hardwired Smoke & Carbon Monoxide Combination Alarm With Battery Backup: Carbon Monoxide & Smoke Detectors at . Voice Indicates Type of Threat and Location Photoelectric Smoke Detector and Electrochemical Carbon Monoxide Detector Can Connect to Other First Alert. This hardwired combination smoke and carbon monoxide detector can be connected to other compatible BRK or First Alert CO smoke detectors within a single-family residence. Our best overall pick is the First Alert SC9120B Hardwired Smoke and Carbon Monoxide Alarm, a superbly reliable and effective double-duty device. Lights on the face of the alarm tell you what the threat is, and false alarms can be silenced with a single button.Ĭonnect to Other Alarms for Greater Coverage The First Alert SC9120BA 10-Year Battery Backup Hardwired Smoke and Carbon Monoxide Alarm features a built-in 10-year lithium battery that provides continuous power for the life of the detector. Its latching alarm indicator automatically identifies which unit initiated the alarm–even after the conditions that set off the alarm have subsided.ĭesigned to meet the latest construction requirements, the First Alert Combination Smoke and Carbon Monoxide Alarm detects two threats, smoke and carbon monoxide. When smoke or carbon monoxide is detected, a loud 85-decibel alarm alerts you to the threat. This CO smoke detector can be connected to other compatible BRK and First Alert hardwired smoke and carbon monoxide detectors. It includes a 9-volt battery for continued function in the event of a power outage, and it features a test/silence button, tamper-resistant locking brackets, and a universal mounting bracket. The First Alert BRK SC9120B Hardwired Combination Smoke and Carbon Monoxide Alarm uses an electrochemical CO sensing technology and Ionization sensor for smoke detection.
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