BRK 120V HARDWIRE SMOKE CO COMBO W/ BATTERY BACK UP — 1 UNIT

• The FIRST ALERT BRK SC9120B hardwired combination smoke and carbon monoxide alarm uses an electrochemical carbon monoxide sensing technology and ionization sensor for smoke detection
• It includes a 9 V 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
• This carbon monoxide smoke detector can be connected to other compatible BRK and FIRST ALERT hardwired smoke and carbon monoxide detectors
• Its latching alarm indicator automatically identifies which unit initiated the alarm even after the conditions that set off the alarm have subsided.