Lutron MCH-383SD CO2 Meter + Humidity/Temp., SD Card

\nSD Card real time data logger\nCO2/HUMIDITY/TEMP. DATA RECORDER\nModel : MCH-383SD\n* Recorder with real time data logger, save the measuring data along the\n time information ( year, month, date, hour, minute, second ) into the SD\n memory card and can be downloaded to the Excel, extra software is no need.\n* CO2 range : 0 to 4000 ppm, max. 6000 ppm typically.\n* Humidity : 10 to 90 %RH.\n* Temperature : 0 to 50.0 oC, oC/oF.\n* Show CO2, humidity and temperature values in the same LCD.\n* Large LCD display, easy readout.\n* Power supply from DC 9V adapter in, power adapter is included.\n Also need DC 1.5V ( UM-4/AAA ) battery x 6 PCs for clock power supply.\n* RS232/USB computer interface.\n* Size : 132 x 80 x 32 mm.\n\n