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First Alert Hard-Wired Thermistor Heat Alarm in Gray | 5.7 H x 2 W x 5.5 D in | Wayfair HD6135FB

This Hard-Wired Thermistor Heat Alarm is a great add-on for crawl spaces, laundry rooms, garages, bathrooms, kitchens, or other applications not suitable for smoke alarm installations. Features advanced rate-of-rise sensing technology. The alarm sounds... more

First Alert Hard-Wired Photoelectric Electrochemical Smoke & Carbon Monoxide Alarm in Gray | 5 H x 5 W x 2 D in | Wayfair SC7010B

This Hard-Wired Photoelectric Electrochemical Smoke and Carbon Monoxide Alarm features two latching features. The spread spectrum horn tone has a lower and varying frequency that makes it easier for the elderly with a normal age-related hearing loss to... more

BRK First Alert Hardwired Smoke Alarm - 10 Year Battery

The First Alert 9120LBL hardwired smoke alarm connects directly to your home electrical system. In the event of a power outage, the smoke/CO alarm is equipped with a 10-year lithium battery backup. more

BRK First Alert - SC9120LBL Hardwired Smoke & Carbon Monoxide Alarm

The First Alert SC9120LBL hardwired combination smoke/CO alarm connects directly to your home electrical system. In the event of a power outage, the smoke/CO alarm is equipped with a 10-year lithium battery backup. more

First Alert Hardwired 120V Electrochemical Carbon Monoxide Alarm - 1 Each

First Alert hardwired carbon monoxide detector with battery back-up. Features an electrochemical sensor which detects carbon monoxide gas and measures the concentration. more

First Alert Hard-Wired Electrochemical Smoke & Carbon Monoxide Alarm in Gray | Wayfair 1039807

This First Alert Hard-Wired Electrochemical Smoke and Carbon Monoxide Alarm uses an electrochemical CO sensing technology and ionization sensor for smoke detection. It includes a 9-volt battery for continued function in the event of a power outage, and... more