EXTECH CO 200 Desktop Indoor Air Quality CO2 Monitor

Audible alarm sounds when CO2 level exceeds set point Monitor air quality in schools, office buildings, greenhouses, factories, and anywhere that carbon dioxide is a concern. Measures and displays carbon dioxide concentration, air temperature and humidity. Captures min/ max; press RESET to clear memory. Also displays the year, month, date, and time of day. Audible alarm sounds when carbon dioxide levels exceed the set point. Activates an alarm relay that can be used for connection to an external indicating or controlling device. Specifications Range CO2 0 to 9999 ppm RH 0.1 to 99.9% temp 14 to 140° F ( -10 to 60° C) Resolution RH 0.1% CO2 1 ppm temp 0.1° F/ C Dimensions 4.6 " x 4 " x 4 " ( 117 x 102 x 102 mm) Manufacturer number CO200