Universal Security Instruments SS-776-CAN-3 3-Pack Battery Powered Ionization Smoke and Fire Alarms with silence are fast and easy to install - no wiring required. Theyre perfect for new or replacement installations. This 3-Pack contains three (3) separate alarms. A 9-Volt super heavy-duty battery provides continuous protection, even during power outages. The audible low-battery warning signal and test/silence button provide added security. A red LED provides visual indication of power and alarm conditions. This alarm uses a dual chamber ionization sensor. The chamber and cover designs guards against insects and contaminants. The loud 85-decibel horn will alert inhabitants to smoke and fire danger within the alarm coverage area. Quiet nuisance alarms with the convenient silence button with automatic reset. Theres even an option to temporarily override a nonhazardous alarm; an ideal feature for cooking smoke and fireplaces. Designed for fast and easy installation — no wiring required. Mounting hardware is included. Universal Security Instruments brings over four decades of manufacturing expertise to a full line of safety products. This 3-pack meets industry standards: Listed to UL Standard 217 and California State Fire Marshal approved. 3-year limited warranty. Universal Security Instruments is always working to protect your family. WHATS IN THE BOX: Three (3) Universal Security Instruments model SS-776-CAN-3 alarms, three (3) mounting brackets and screws, Three (3) 9 volt super heavy duty carbon zinc batteries, and Three (3) users manuals. Universal Security Instruments—Always Working To Protect Your Family