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