The CO71 combines the latest sensor and electronic technology to produce one of the smallest, easiest-to-use CO detectors on the market today according to the manufacturer. A large, backlit display with level-indicating tricolor LED measures the CO concentration in the air. An audible alarm sounds with higher concentrations, with the rate of the alarm increasing as the CO level increases. This visual and audible indication is a key feature of the CO71.
—Universal Enterprises, Inc.