Kidde Nighthawk Plug-In w/Battery Back-up Electrochemical Carbon Monoxide Detector

The Kidde KN-COPP-3 AC powered, plug in carbon monoxide alarm provides you and your family with warning signal to protect against dangerous levels of carbon monoxide in your home. This alarm is easily installed in any of your AC wall outlets. The digital display feature allows for easy viewing of carbon monoxide levels from 30-999PPM (parts per million). The KN-COPP-3 is UL listed and offers a 10-year life and a 10-year limited warranty.Digital Display - Displays the level of carbon monoxide the unit is sensing. The unit updates this reading every 15 seconds.Peak Level Button - Displays the peak CO level recorded by the alarm since it was last reset or unplugged.9V Battery Backup - Provides protection during power outage.Test Button Functions - Tests the unit for proper operation - Resets the Carbon Monoxide alarmLED Operation - Blinking dot in lower right corner of display denotes normal operation - Digital readout displays CO concentration in parts per million (30-900PPM) * In alarm condition, you will hear 4 quick beeps, 5 seconds of quiet, repeat.