BRK Electronics First Alert SA303B 9V DC Battery Operated Ionization Smoke Alarm (Upgraded to SMI100)

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Basic battery operated smoke alarm. Single Button Silence/Test Locking Features Lock Battery Drawer and Alarm to Base 9V Battery 10-Years Limited Warranty Model # SA303B Weight 6.8 oz Dimension 4.34" dia x 1.9"H Operating Voltage 9V Battery Powered Temperature Range 40°F (4°C) to 100°F (38°C) Humidity Range 10% to 90% relative humidity (RH) Audio Alarm 85dB at 10 feet Test/Silence Electronically simulates smoke condition, causing the unit to alarmManual: Press and hold test/silence button Alarm Reset Automatic when smoke clears Smoke Sensor Dual Ionization Indicator Lights/Sounds DC Power: Intermittent Red Light Alarm: Audio alarm, rapidly flashing red light Listing Listed to UL217 Standard Show more