First Alert's SMCO210V 10 Year Sealed Battery Combination Smoke and Carbon Monoxide Alarm with Voice and Location Alerts Size:1 in H x 5.67 in L x 5.67 in W 18 Lb bag covers up to Ball 18 Lb bag covers up to 325 sq ft SPECIAL FEATURES Slim design TYPE Self test AMPERAGE RATING 20A VOLTAGE RATING 125V CIRCUIT INTERRUPTER TYPE GFCI PACKAGING TYPE ED Box FEATURES FedSpec Certified WIRING METHOD Back and side wire ALLOWABLE WIRE SIZE #14 10 AWG NEMA CONFIGURATION 5 20R TORQUE RATING 16 lbf in COLOR Ivory First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency a friendly voice will also tell you the type and location of danger in your home to help you safely escape