SMOKE & CARBON MONOXIDE COMBINATION BATTERY 5 YR FIRST ALERT

Most Accurate Electrochemical Carbon Monoxide Sensor Available In Comparison To Other Sensing Technologies. Single button test/silence. 9V Alkaline Battery Powered. Two Latching features: Alarm Latch to easily identify initiating alarm after alarm condition has subsided. Low battery latch: to visually identify which unit is in low battery condition.. Two Silence Features: Alarm Silence to temporarily silence false alarms. Low Battery Silence to silence low battery chirp for up to 8 hours.. Intelligent Sensing Technology helps reduce the number of false alarms. Perfect Mount Makes Alignment Easy. 5 Year Limited Warranty. Alarm Dimensions: 5.6″ Dia x 2.0″H. Weight: 7.60 oz.. Operating Voltage: 9V Battery Powered. Temperature Range: 40oF (4oC) to 100oF (38oC). Humidity Range: 10% to 95% relative humidity (RH). Audio Alarm: 85dB at 10 feet. Test/Silence: Electronically simulates smoke condition or carbon monoxide condition- causing the unit to alarm. Press and hold test/silence button. Alarm Reset: Automatic when smoke and/or CO clears. Smoke Sensor: Dual chamber ionization. CO Sensor: Electrochemical. DC Power Indicator Light: Intermittent Green LED. Local Alarm Indicator Light: Red LED ?ashes rapidly. Alarm Latch Lights/Sounds: Red LED ?ashes 2 sec on/2 sec off after local alarm stops. Low Battery Latch Indicator Lights/Sounds: Green LED ?ashes on for 2 seconds- off for 2 seconds. Note: Latching features are active for 15 minutes only. Listing: Listed to UL217 and UL2034 Standards.