The Model AQH-20 from Dwyer Instruments Inc., Michigan City, IN, measures carbon dioxide concentration, air temperature, and humidity in a single handheld device. The backlit LCD shows all 3 parameters simultaneously. The device can display dew point or wet bulb temperatures in place of the ambient temperature. Other features include min., max. and avg. readings; ability to hold current values for recording; and an audible alarm to warn the user that current ambient conditions are becoming hazardous. (800-872-9141, fax 219-872-9057, [email protected], www.dwyer-inst.com)
Dwyer Instruments Inc.