![]() Battery installation and removal can occur while the unit is mounted via the side load battery compartment. Depending on what mode the alarm is in, pushing the button will test, silence and re-test the alarm when in silence and clear the latching feature. A single Test/Silent button eliminates confusion. This allows fine-tuning to compensate for out of alignment wall studs and to keep the wording level when wall mounting. ![]() An alarm will sound for a short time, then the alarm will silence. The First Alert smoke alarm with silence button allows you to both silence a non-threatening alarm and to test the units functionality. The "Perfect Mount" system features a gasketless base and a mounting bracket that keeps the alarm secure over a wide rotation range to allow for true alignment. Take out its battery, then press the Test button holding it down for 15 seconds. Optional Locking Feature: Secures alarm to mounting bracket. Perfect Mount: Mounting bracket keeps alarm secure over a wide rotation range to allow for perfect alignment. After the alarm condition subsides, the initiating unit will store in memory or "latch" the information and begin to flash the red LED indicator 2 seconds on, 2 seconds off. Single Button: One press to silence and test alarm. When interconnected, the unit that triggered the alarm rapidly flashes its red LED indicator. End-of-life warning lets you know when its. The "Latching Alarm Indication" remembers which unit initiated an alarm. It features a test and silence button, an electrochemical carbon monoxide sensor and a photoelectric smoke sensor. The "Intelligent Sensing Technology" system is designed to reduce nuisance alarms. Applications include residential and institutional applications including hospitals, hotels, motels, dormitories and other multi-family dwellings. It features a dual ionization smoke sensing chamber and a carbon monoxide sensor, 85dB horn, 9B battery backup and a "silence" feature. The BRK First Alert SC9120B is a smoke and carbon monoxide combo alarm with battery backup.
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