Front load battery door provides easy access which reduces the installation time and battery replacement time Battery pull tab prevents draining battery until permanent AC power is connected Hush feature temporarily silences nuisance alarms One touch test button tests unit's electronic circuitry Kidde?s smoke alarms meet the requirements of Underwriters Laboratories (UL), an independent facility that tests products for compliance with widely-accepted safety standards Part Number: 408-21006376 Color: White Pattern: i12060 Kidde Front Loading Battery Smoke Alarm Item Package Quantity: 1 Certification: UL217, NFPA72, & (Ch. 11), NFPA 101 (1 & 2 Family), CA Fire Marshall, FHA, HUD Batteries Included?: Yes Batteries Required?: Yes Item Dimensions Length: 6 inches Width: 2 inches Height: 6 inches