Lutron GCO-2008 CO & Temperature Meter was being designed and manufactured by Lutron, a well experienced manufacturer for Environmental Measuring Instrument.
CO (Carbon monooxide), Temperature.
CO range : 0 to 1,000 ppm.
Temperature. : 0 to 50 oC, oC/oF.
CO response time : 30 second.
Data hold Record (Max., Min.).
RS232/USB computer interface.
1.5 V battery (UM-4/AAA) x 6 PCs or DC 9V adapter in.