3-In-1 Smoke Fire and Carbon Monoxide Detector 10-Year Sealed Battery Backup Hardwired Microprocessor Intelligence Item #253142 | Model #420114 The semi-oval construction allows for

The semi-oval construction allows for maximum coverage while still offering premium cut-in ability

Approved for NSF/ANSI 71

Ionization sensor - detects invisible fire particles (associated with fast flaming fires) sooner than photoelectric sensing alarms

Apply a second coat to the large

3-In-1 Smoke Fire and Carbon Monoxide Detector 10-Year Sealed Battery Backup Hardwired Microprocessor Intelligence Item #253142 | Model #420114 The semi-oval construction allows forThe Universal Security Instruments hardwired MIC1509S 3 in 1 Smoke, Fire and Carbon Monoxide Smart Alarm will provide up to 10 years of continuous protection against 3 deadly threats within the home. Patented Universal Smoke Sensing Technology provides the benefits of both photoelectric and ionization alarms in 1 device to protect against fast flaming and slow smoldering fires. This alarm also features protection against the silent killer carbon