Ecoey Carbon Monoxide Detector CO Detector Alarm Battery Operated Low Battery Warning Figaro Sensor, FJ119 2 Pack Details: • Advanced Technology: Import Figaro sensor, high consistency and stability. Sensor range: 0-10000PPM. Keep the CO alarm away from kitchens, garages, and furnace rooms. Dust, grease, and household chemicals can affect the sensor. • Human Alarm Sounds: If the carbon monoxide detector enters the status of CO alarm warning, the alarm will sound at a lower volume (<85dB) for around 10 seconds, then at a normal alarm volume (>85dB). This avoids startling people with a sudden loud alarm sound. • LED Indicator: The carbon monoxide alarm reports its working status by LED colors. Green LED flashes every 30 seconds to indicate normal operation. When first powered on, it preheats for 30 seconds before the green light flashes every 3 seconds. Red indicates an alarm state, and yellow indicates a fault. • 5 Year Lifetime: The CO alarm is powered by 2 1.5V AA Alkaline batteries, which can be used for at least 5 years. If the power is low, the red LED flashes with chirps twice every 35 seconds. Please replace the batteries within 7 days. Product life is 7 years after initial power-up. • Test/Silence Button: The TEST/SILENCE button allows you to test the CO alarm for problems and easily mute the alarm for 5 minutes when a false alarm occurs. The CO detector is easy to install and can be placed anywhere. Condition: New in BOX • Box is damaged