The HOBO MX1102 CO2 data logger is a Bluetooth Smart enabled logger that stores and wirelessly transmits CO₂, temperature and humidity readings. Using non-dispersive infrared (NDIR) self-calibrating CO2 sensor technology and integrated temperature and RH sensors, the MX1102 is for use collecting data in indoor and other non-condensing environments.

The logger is Bluetooth Smart-enabled for wireless communication with a mobile device. Using the HOBOmobile app on your phone or tablet or HOBOware software on your computer allows you to access data right from your mobile device within a 100-foot range, making it easy to configure the logger, read it out, and view plotted data. The MX1102 also supports a USB connection.

The logger includes sensors that measure temperature from 0 to 50°C with accuracy of ±0.21°C; relative humidity from 1 to 90% with accuracy of ±2%; and carbon dioxide from 0 to 5,000 ppm with accuracy of ±50 ppm ±5% of reading. The logger can calculate minimum, maximum, average, and standard deviation statistics and can be configured to trip audible or visual alarms at thresholds you specify.

In addition, it supports burst logging in which data is logged at a different interval when sensor readings are above or below certain limits. This logger also has a built-in LCD screen to display the current CO2 level, temperature, RH, logging status, battery use, memory consumption, and more. Battery life is 6 months at a 5-minute CO₂ logging rate.