USI Electric MIC1509S Hardwired 3-in-1 Universal Smoke & Carbon Monoxide Alarm with 10-Year Sealed Battery Plastic Storage Finally this unit features 2

Finally this unit features 2 built in dampeners that allow this unit to gently glide back inside of your cabinet with very little assistance needed

The inline speed controller enables you to set the duct fan’s speed to optimal noise and airflow levels for various environments

5mm auxiliary input for wired connections

Don't know what type of smoke and carbon monoxide alarm is right for your home

USI Electric MIC1509S Hardwired 3-in-1 Universal Smoke & Carbon Monoxide Alarm with 10-Year Sealed Battery Plastic Storage Finally this unit features 2[shortdesc] Alarm Type Smoke, Carbon Monoxide & Gas Power Source Hardwired Sensor Photoelectric, Ionization & Electrochemical Interconnects Yes Battery 10 Year [ shortdesc] The USI Electric MIC1509S Hardwired 3 in 1 Universal Smoke Sensing & Carbon Monoxide Combination Alarm provides continuous protection against three deadly threats within the home. Newly Universal Smoke Sensing Technology offers the benefits of both photoelectric and ionization