First Alert FG250 BRK Brands, Inc FG250RV Detector Smoke 9V

Dual ionization - dual ionization sensing chamber. Generally more Effective at detecting small particles produced by Flaming fires. Sources may include paper or kitchen grease Silence feature - silences nuisance alarms Tamper resistant locking pin - locks alarm Cover to prevent removal of battery. Perfect for apartment, dormitory or hotel applications 9V battery included approved for RV use It can ship within the US except New York

BRK 9V Alkaline Battery Smoke Alarm Input Voltage: 9 V DC Packaged Quantity: 6 Input Voltage: 9 V DC Packaged Quantity: 6 Form Factor: Ceiling Mount, Wall Mount Form Factor: Ceiling Mount, Wall Mount Diameter: 4.3" Detectable Medium: Fire Sensing Technology: Ionize Diameter: 4.3"