The Triplett Model GSM350 Carbon Monoxide/Carbon Dioxide IAQ Datalogger simultaneously displays CO， CO2， Temperature， and Humidity on its large color display with 4 brightness levels. It can be used to measure air quality in office buildings， schools， exhibition halls， shopping malls， meeting rooms， fitness centers， restaurants and other public places. It has a user settable datalogging duration period of 1 hour， 24 hours， or 7 days with a sampling rate of 1 minute， 15 minutes， or 1 hour. Captured readings can be viewed in a Histogram on the display or you can transfer historical data to your PC in Excel (CSV) format via USB. Additional features include audible CO and CO2 alarms with user adjustable settings， real time clock， Min/Max/Average to record the highest， lowest and average readings， Data Hold freezes the reading on the display， and Auto power off with disable to conserve battery life. °F/°C selectable. Includes a 3.7V rechargeable lithium battery， and USB cable for charging and data transfer. 1 year warranty.

Simultaneously displays CO， CO2， Temperature， and Humidity

Datalogging duration of 1 hour， 24 hours， or 7 days

Sampling Rate of 1 minute， 15 minutes， or 1 hour

Histogram display for viewing captured readings

Transfer historical data to your PC in Excel (CSV) format via USB

Large color LCD display with 4 brightness levels

User-adjustable CO and CO2 alarm settings

Real time clock

Min/Max/Average and Data Hold

°F/°C selectable