First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery
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Electrochemical Carbon Monoxide Sensor - the most accurate sensor available as compared to other sensing technologies 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 nuisance alarms. Low Battery Silence to silence low battery chirp for up to 8 hours. Intelligent Sensing Technology helps reduce the number of nuisance alarms Includes mounting anchors and screws. End of Life Signal provides audible notification alarms needs to be replaced 10-Year Limited Warranty Specifications: Model Number: SCO2B Weight: 7.6 oz Dimensions: 5.6" dia x 2.0"H Operating Voltage: 9V alkaline battery operated (not hardwired) 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 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/CO Sensor: Dual chamber ionization/Electrochemical Indicator Lights/Sounds DC Power: Intermittent Green LED Local Alarm: Red LED flashes rapidly Alarm Latch: Red LED flashes 2 sec on/2 sec off after local alarm stops Low Battery Latch: Green LED flashes on for 2 seconds, off for 2 seconds. Note: Latching features are active for 15 minutes only. Listing Listed to UL217 and UL2034 Standards



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