This indoor air quality (IAQ) datalogger measures Oxygen, Carbon Dioxide, Carbon Monoxide, Temperature and Humidity. The SD-9901 is capable of recording readings from 3 probes simultaneously and displays measurements on a large backlit LCD. Using a SD card (max 16Gb), a user can select a desired sampling rate and quickly generate an Excel file on a SD card without the use of software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring. Optional PC software also allows a user to track live measurements.Features

• Measures oxygen (O2), carbon dioxide (CO2), carbon monoxide(CO), temperature and humidity
• Records up to 3 readings simultaneously
• User adjustable audible alarms
• User selectable unit of measure (°F or °C)
• Data hold and Max/Min functions
• Real-time datalogger with integral SD memory card
• User selectable sampling rate from 2 secs to 8 hrs
• Easy-to-read backlit LCD display
• Optional PC software features live tracking via USB connection
• Tripod mount for long-term monitoring
• Low battery indicator and auto shut off