3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery Item #674683 Model #DWE4120W Helps protect the system from

Helps protect the system from damaging contaminants

Constructed with an innovative lock-tight system called DuraLock to ensure tight and secure connections

Inverter systems provide additional reliability due to the soft start

Per cartridge: Fine spray covers up to 100 sq

3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery Item #674683 Model #DWE4120W Helps protect the system fromThe Universal Security Instruments MIC3510SB 3 in 1 Smoke, Fire and Carbon Monoxide Smart Alarm provides 10 years of continuous protection against deadly threats in the home. New patented Universal Smoke Sensing Technology provides the benefits of both photoelectric and ionization alarms in one device to protect against fast flaming and slow smoldering fires. This alarm also features protection against the silent killer carbon monoxide making it a 3