Ecoey Carbon Monoxide Detectors, 10-Year CO Detector with Human Alarm Sounds and Test Button, Carbon Monoxide Alarm with Electrochemical Technology and Low Battery Signal for Home, FJ127, 4 Packs

Features

• ELECTROCHEMICAL TECHNOLOGY: The CO detector uses electrochemical sensors and precise software controls, it can accurately calculate different alarm times and very small standby currents at different concentrations of carbon monoxide
• HUMAN ALARM SOUNDS: If the alarm come into the status of CO alarm warning, the alarm will start in a lower alarm volume (<85 dB) for around 10 seconds, then issuing a normal alarm volume (>85 dB). It will avoid people to be scared suddenly by a loudness alarm sound
• LED INDICATOR: Accordinng to the alarm's working situation, the LED indicator will show different colors to notify you.(the green indicates normal operation, the red indicates an alarm state, and the yellow indicates a fault) to ensure your safty
• HOME PROTECTION: According to US data analysis, a family fire begins every 38 seconds. The faster you know about the fire, the sooner you start moving your family, and the smoke alarm at work reduces the risk of home fire deaths by 50%
• 10-YEAR 24/7 PROTECTION WITH REPLACEABLE BATTERY: This CO detector powered by 2 replaceable 1.5 V AA batteries and a 10-year sensor life which provides 24/7 protection even during power outages