First Alert SMICO100-AC Hard Wired Carbon Monoxide & Smoke Alarm – Interconnect
Perfect condition combination hard wired smoke and carbon monoxide detector. Manufactured April 2026 (see photo). I tried to install but brand did not match my other alarms. Includes wiring harness and ceiling mount ring. Battery strip was just pulled and includes original battery.
First Alert SC9120B/SMICO100-AC Combination Carbon Monoxide & Smoke Alarm AC
First Alert SC9120B/SMICO100-AC Combination Carbon Monoxide & Smoke Alarm AC in new conditions never open or used. Box are damaged but detectors remain new. Please see pictures for better condition details.
BRK First Alert SC9120B Smoke & Carbon Monoxide Alarm*used w/ Bracket & Wires
The BRK First Alert SC9120B Smoke & Carbon Monoxide Alarm is a reliable and essential home security device. This hardwired alarm comes in a sleek white color and has a battery backup feature for added peace of mind. Manufactured in 2019, this unit is designed to provide early warning in case of smoke or carbon monoxide emergencies, ensuring the safety of you and your loved ones. The alarm comes with a bracket and wires for easy installation, making it a convenient and efficient choice for home improvement projects related to home security.
BRK First Alert 9120B Smoke & Carbon Monoxide Alarm*used /NO Bracket
The BRK First Alert 9120B Smoke & Carbon Monoxide Alarm is a reliable and essential home security device that provides early warning in case of a fire or carbon monoxide leak. This hardwired unit features a battery backup for added safety and security. Manufactured in 2006 in Mexico, this white alarm is designed to be a standalone unit with a power source that does not require batteries. Trust the BRK brand for quality and dependability when it comes to protecting your home and loved ones.
BRK SC9120B Smoke & Carbon Monoxide Detector
Alarm Interconnect : Can be connected to compatible BRK or First Alert alarms within a single-family residence, sounding all alarms simultaneously. Dual Sensing : Features both an electrochemical carbon monoxide sensor and an ionization sensor for detecting fast-burning fires.
First Alert Carbon Monoxide Smoke Combo new BRK SMICO100-AC Smoke Alarm
The First Alert Combination Carbon Monoxide & Smoke Alarm is a white smoke alarm with a diameter of 6 inches and a depth of 2 inches. It is powered by a corded electric source and includes a battery backup. With its brand reputation and reliable features, this alarm provides essential protection for your home against both smoke and carbon monoxide hazards.
First Alert SC9120B/SMICO100-AC Carbon Monoxide & Smoke Alarm AC Power (6 Pack)
SC9120B / SMICO100-AC. BRK SC9120B / SMICO100-AC. Smoke Alarm. First Alert. Power Source. Battery Backup. Read moreabout the condition. Number of Batteries.
BRK Smoke/CO Alarm,2 in H,5.6 in W 825LZ1
Smoke/CO Alarm, Battery Chemistry Lithium, Battery Location Back, Battery Locking Pin No, Battery Size 10-Year Sealed 3V Lithium Battery, Communication Protocol Not Applicable, Compatible With Not Applicable, Detector Type Smoke/CO Detector, Includes Mounting Bracket, Mounting Screws, Number of Tandem Detectors 0, Power Source Removable Battery, Sensor Type Electrochemical, Ionization, Visual Alert Type Indicator Light (Red or Green), Volume Level 85 dB, Alert Type Sound.