First Alert Hardwired Smoke and Carbon Monoxide Detector with Battery Backup White

Dimensions (Overall): 2 Inches (H) x 5.6 Inches (W) x 5.6 Inches (D)
Weight: 8.5 ounces
Package Quantity: 1
Requires Hardwired Installation: Yes
Battery: 1 CR123 Lithium, Required, Included
Warranty: 10 Year Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item,
•Keep your family safe with this hardwired smoke and carbon monoxide alarm; the 10-year battery backup means constant monitoring for the life of the alarm, even if there's a power failure
•Features electrochemical CO sensing technology and ionization smoke detector; loud 85-decibel alarm sounds when smoke or CO levels are elevated
•Connectable alarm links with other compatible BRK or First Alert CO smoke detectors
•Lights indicate if the alarm detects smoke or carbon monoxide
•Simple to use, with a single test/silence button, and side-load battery compartment; tamper-resistant locking brackets and universal mounting brackets make installation easy
•Meets UL standards; 10-year limited warranty
This First Alert Hardwired Smoke and Carbon Monoxide Detector includes a 10-year battery backup that continues to protect you in the event of a power failure. The alarm features electrochemical CO sensing technology, an ionization smoke detector, and an 85-decibel alarm. One button silences any nuisance alarms and tests detector functions, while lights indicate if the alarm detects smoke or carbon monoxide. The latching alarm indicator automatically identifies which unit initiated the alarm, even after conditions that set off the alarm have subsided. And an end-of-life signal enhances your safety by letting you know when it's time to replace the unit. Connect it to up to 12 compatible BRK or First Alert alarms within a single-family residence.