First Alert SC9120BFF BRK SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup

  • Sale
  • $40.95
  • Regular price $53.99


  • Hardwired CO smoke alarm features battery backup for constant monitoring
  • Can connect to other compatible BRK or First Alert CO smoke detectors
  • Lights indicate if the alarm is for smoke or for carbon monoxide
  • Single test/silence button for simple operation
  • Side-load battery compartment for convenience