BASIC CARBON MONOXIDE ALARM

This Carbon Monoxide Alarm alerts user to replace it after 7 years of operation. It can be installed in any AC wall outlet, but has battery back-up with a 9V battery (included). Features: test/reset button, tamper resistant-unit goes into alarm when removed from outlet, low battery Hush-silences low battery chirp for up to 12 hours, LED's-green for normal operation and red for alarm and a 5 year limited warranty.