First Alert FG250B Dual Ionization Smoke Alarm with 9-volt Battery

Features:

• Dual Ionization Sensing Chamber 
• Silence Feature Silences Nuisance Alarms 
• Tamper Resistant Locking Pin Locks Alarm Cover to Prevent Removal of Battery 
• 9V Battery Included 
• Approved for RV Use
• It meets building codes where DC with Silence smoke alarms are required and with model building codes published by the ICC.BRK Model FG250 is a state-of-the-art smoke alarm designed to provide early warning of a fire.
• It features a full insect screened dual ionization smoke sensing chamber, an 85dB horn, a supervised 9V battery power supply, a full function test switch, a silence feature to silence unwanted nuisance alarms, and a red LED light that indicates DC power or alarm.
• Perfect for apartment, dormitory, or hotel applications. The compact, low-profile design complements any décor. Battery installation and removal can occur while the unit is mounted to the ceiling or wall via the hinged cover.
• When the voltage drops to a pre-set warning level, the horn will “chirp” approximately once per minute to indicate a fresh battery is needed. To ensure the battery is always replaced properly, the cover is designed to resist closing when the battery is missing. Designed for wall or ceiling mounting. Includes mounting anchors and screws. Approved for use in recreational vehicles