The First Alert SMI105-AC is a hardwired, interconnected smoke alarm with Precision Detection and a sealed 10-year battery backup for continuous home protection. This First Alert hardwire smoke alarm combines advanced sensing technology with a long-life, maintenance-free battery to meet modern safety expectations and...

First Alert SMICO110 is a combination smoke and carbon monoxide alarm with a sealed 10-year battery that provides long-life, low-maintenance home safety. Designed for homeowners who want dependable, dual-hazard detection without the hassle of frequent battery changes, the First Alert 10-Year Battery Combination Smoke...

The First Alert Plug-In Carbon Monoxide Alarm (CO606) is a plug-in CO detector with electrochemical sensing and battery backup that provides continuous, easy-to-use carbon monoxide monitoring for homes. This compact plug-in carbon monoxide alarm combines an advanced electrochemical sensor with a backup battery so...

The First Alert Hardwire Smoke Alarm (SMI100-AC) is a hardwired, interconnect-capable smoke detector with First Alert’s Precision Detection sensing, a battery backup, and a quick-connect design for easy replacement and whole-home warning. This hardwire smoke alarm was designed to meet updated industry standards while...

The First Alert Battery Smoke Alarm (SMI100) is a battery-powered smoke detector with Precision Detection technology designed to cut down on nuisance alerts while delivering reliable early warning for household fires. Compact and purpose-built for simple installation, this First Alert smoke alarm runs on...

First Alert BRK SMI100-AC is a hardwired ionization smoke alarm with a 9V battery backup, sold in a six-pack for whole-home coverage. This six-pack of BRK SMI100-AC smoke detectors provides continuous 120-Volt AC protection with a 9-volt battery backup so alarms stay active during...

The First Alert BRK SC9120B-3 is a three-pack of hardwired combination smoke and carbon monoxide alarms with battery backup designed for continuous, interconnected home monitoring. Combining ionization smoke sensing with an electrochemical CO detector, these BRK units provide dual-threat detection for both fast-burning fires...

The First Alert 9120B (SMI100-AC) is a hardwired ionization smoke alarm with 9V battery backup sold in a 3-pack for reliable, interconnected home smoke detection. This three-pack of First Alert 9120B smoke alarms is built for fast installation, dependable operation and reduced nuisance alerts...

The First Alert SMICO100-AC is a hardwired, interconnectable smoke and carbon monoxide alarm with battery backup that combines Precision Detection technology for reliable early alerts. Designed for homes that want a single, efficient device to detect both smoke and carbon monoxide, the SMICO100-AC blends...

The First Alert Hardwire Smoke Alarm SMI100-AC is a hardwired, interconnect-capable smoke detector with battery backup and Precision Detection sensing to reduce false alarms while providing early warning. This hardwired alarm replaces existing fixtures without rewiring, adds battery backup for power outages, and links...

First Alert SMICO100-AC is a hardwired, interconnectable smoke and carbon monoxide alarm with battery backup that combines advanced sensing to cut down false triggers and links multiple units for whole-home alerts. Designed for homes and multi-room installations, this 2-in-1 alarm pairs smoke detection with...

The First Alert SMCO100 is a battery-powered combination smoke and carbon monoxide alarm that delivers reliable early warning with advanced Precision Detection sensing. Designed for homeowners and renters who want straightforward, dependable protection, this 2-in-1 unit combines smoke detection and carbon monoxide sensing in...

The First Alert SMICO100-AC is a hardwired combination smoke and carbon monoxide alarm with battery backup and interconnect capability for whole-home early warning. This two-in-one unit pairs optical smoke sensing with carbon monoxide detection and is designed for hardwired installation with a quick-connect plug...

The First Alert SMICO100 is a battery-powered combination alarm that detects both smoke and carbon monoxide using advanced Precision Detection sensing. This compact 2-in-1 unit combines smoke and CO monitoring into a single, easy-to-install alarm designed for home use. Built with First Alert’s upgraded...

First Alert SC5 is a battery-powered, smart 2-in-1 smoke and carbon monoxide alarm that sends mobile alerts, links with compatible units, and delivers voice warnings to help you respond faster to danger. Upgrade basic detectors to a connected safety layer with the First Alert...

The First Alert SMCO500V is a battery-powered combination smoke and carbon monoxide alarm that uses voice and location alerts plus Precision Detection technology to warn you and guide escape. This compact, easy-to-install unit combines dual sensing for smoke and carbon monoxide with First Alert’s...

The First Alert Plug-in Combination Explosive Gas & Carbon Monoxide Alarm (GCO1CN) is a plug-in safety detector that monitors propane, natural/methane gas and carbon monoxide, displaying current and peak readings while sounding an 85 dB alarm and offering battery backup. Keeping living spaces safe...