Data Sheet
PRODUCT DATASHEET
Features
PRODUCT DATASHEET
CO260 Indoor Air Quality 
CO/CO
2
 Meter/Datalogger
The Extech CO260 monitors indoor air quality for Carbon Monoxide (CO)
and Carbon Dioxide (CO2) levels. In high concentrations these gases can 
affect the health and well-being of people and pets. Monitor CO2 levels 
in schools, office buildings, greenhouses, factories, hotels, hospitals, 
transportation lines and anywhere that high levels of carbon dioxide are 
generated. Common areas to monitor CO levels include boiler rooms, 
warehouses that use propane and gasoline-powered for lifts, boats, 
planes, RVs, and manufacturing plants. The CO260 also measures 
air temperature/relative humidity and calculates dew point/wet bulb 
temperatures. It can datalog manually up to 99 readings with internal 
memory or continously up to 32K readings with included software. 
Features
•  Manually step through readings of CO, CO2, Dew Point, 
Wet Bulb, Air Temperature, and Relative Humidity on 
large backlit LCD with real time clock 
•  Built-in maintenance free NDIR (non-dispersive infrared) 
CO2 sensor
•  Programmable CO warning level with audible alarm
•  Calculates statistical weighted averages of TWA (8 hour 
time weighted average) and STEL (15 minute short 
term exposure limit)
•  Pressure compensation adjustment for measuring CO2 
at altitudes other than sea level
•  Manually store/recall 99 readings
•  Continuous datalogging up to 32K readings
•  USB interface with PC software for further data analysis
•  Min/Max and Data Hold
•  Auto power off with disable
•  Complete with 4 AA batteries, USB cable, PC software  
and hard case
•  Optional 33% and 75% RH calibration bottles 
(RH300-CAL)
Ordering 
CO260 .............. Indoor Air Quality CO/CO2 Meter/Datalogger 
RH300-CAL ....... 33% and 75% RH Calibration Kit
www.extech.com
Specifications subject to change without notice. Copyright © 2017-2018 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form. 
Rev. 11/7/18
Specifications
Range Resolution Basic Accuracy
Carbon Monoxide (CO) 0 to 1,000ppm 1ppm
±10ppm<100ppm, ±10% 101-500ppm, 
±20%>500ppm
Carbon Dioxide (CO2) 0 to 9,999ppm 1ppm ±30ppm+5%reading
Temperature -5 to 140°F (-20 to 60°C) 0.1° ±1°F/0.6°C
Humidity 0.1 to 99.9%RH 0.1% ±3%RH
Wet Bulb 23 to 140°F (-5 to 59.9°C) 0.1° Calculated
Dew Point -4 to 140°F (-20 to 59.9°C) 0.1° Calculated
Dimensions/ Weight 7.9 x 2.7 x 2.3" (200 x 70 x 57mm)/ 6.7 oz (190g)
CO260 UPC Code: 793950502600
For full specifications, please visit www.extech.com/CO260 and refer to the product manual.

