Basic battery operated photoelectric smoke/CO combo alarm meets most state and local codes for carbon monoxide and combination alarms. Easy alarm identification through different horn sounds and lights. Single button test/silence Photoelectric Smoke and Electrochemical CO Sensors 2AA Batteries - Save 33% on annual battery replacement costs vs. other smoke/CO combo alarm brands that use 3 AA bateries. End of Life Signal provides audible notification alarms needs to be replaced 7-Years Limited Warranty Model # SCO5CN Weight 8.4 oz Dimension 5.0" dia x 2.0"H Operating Voltage 2AA Alkaline Battery Powered Temperature Range 40°F (4°C) to 100°F (38°C) Humidity Range 10% to 95% relative humidity (RH) Audio Alarm 85dB at 10 feet Test/Silence Electronically simulates smoke and CO conditions, causing the unit to alarm and temporarily silence the alarm. Press and hold test/silence button Alarm Reset Automatic when smoke and/or CO clears Smoke/CO Sensor Photoelectric/Electrochemical Indicator Lights/Sounds DC Power: Intermittent Red Light Alarm: Audio Alarm, rapidly flashing red light by corresponding smoke or CO indicator light Listing Listed to UL217 and UL2034 Standards
