HOBO MX Carbon Dioxide/Temp/RH Data Logger

The Onset HOBO MX1102 CO2 logger measures and records CO2 in buildings and other non-condensing environments.

Features

  • Measurement range, 0-5,000 ppm
  • Self-calibrating NDIR CO2 sensor technology
  • Access data by mobile phone, tablet or computer within 100ft of logger
Your Price $630.00
Stock Check Availability  

Overview
The Onset HOBO MX1102 CO2 logger makes it more convenient than ever to measure and record CO2 in buildings and other non-condensing environments. It measures CO2 from 0–5,000 parts per million (ppm). The free HOBOconnect app allows users to access data right from a mobile phone or tablet within a 100-foot range. Remotely access data in Onset’s cloud-based HOBOlink software with the new MX Gateway.

Mechanics
The MX1102 also features a USB port, so it can be used with a computer running HOBOware Pro graphing and analysis software.

Temperature Sensor
Range 0° to 50°C (32° to 122°F)
Accuracy ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F)
Resolution 0.024°C at 25°C (0.04°F at 77°F)
Drift <0.1°C (0.18°F) per year
RH Sensor
Range

1% to 90% RH (non-condensing)

Accuracy ±2% from 20% to 80% typical to a maximum of ±4.5% including hysteresis at 25°C (77°F); below 20% and above 80% ±6% typical
Resolution 0.01%
Drift <1% per year typical
CO2 Sensor
Range 0 to 5,000 ppm
Accuracy

±50 ppm ±5% of reading at 25°C (77°F), less than 90% RH non-condensing and 1,013 mbar

Warm-up Time 15 seconds
Calibration Auto or manual to 400 ppm
Non-linearity <1% of FS
Pressure Dependence 0.13% of reading per mm Hg (corrected via user input for elevation/altitude)
Operating Pressure Range 950 to 1,050 mbar (use Altitude Compensation for outside of this range)
Compensated Pressure Range -305 to 5,486 m (-1,000 to 18,000 ft)
Sensing Method Non-dispersive infrared (NDIR) absorption
Response Time
Temperature 12 minutes to 90% in airflow of 1 m/s (2.2 mph)
RH 1 minute to 90% in airflow of 1 m/s (2.2 mph)
CO2 1 minute to 90% in airflow of 1 m/s (2.2 mph)
Logger
Radio Power 1 mW (0 dBm)
Transmission Range Approximately 30.5 m (100 ft) line-of-sight
Wireless Data Standard Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0)
Logger Operating Range 0° to 50°C (32° to 122°F); 0 to 95% RH (non-condensing)
Logging Rate 1 second to 18 hours
Logging Modes Fixed interval (normal, statistics) or burst
Memory Modes Wrap when full or stop when full
Start Modes Immediate, push button, date & time, or next interval
Stop Modes When memory full, push button, date & time, or after a set logging period
Time Accuracy ± 1 minute per month at 25°C (77°F)
Power Source 4 AA 1.5 Volt batteries (user replaceable) or USB power source (5 V DC, 2 Watts) 
Battery Life 6 months, typical with logging and sampling intervals of 5 minutes or slower; 6 months or less with logging and sampling intervals faster than 5 minutes while logging CO2. Entering burst logging mode will impact battery life. With app use, battery life can be reduced by remaining connected, excessive readouts, audible alarms, and paging. Visual/audible alarms and other events can have a marginal impact on battery life.
Memory 128 KB (84,650 measurements, maximum)
Download Type USB 2.0 interface or via Bluetooth Smart
Full Memory Download Time 20 seconds via USB; approximately 60 seconds via Bluetooth Smart, may take longer the further the device is from the logger
LCD LCD is visible from 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range
Size 7.62 x 12.95 x 4.78 cm (3.0 x 5.1 x 1.88 inches)
Weight 267.4 g (9.43 oz)
Environmental Rating IP50
  • HOBO MX1102 CO2 Data Logger
  • Four AA 1.5 V alkaline batteries
Questions & Answers
No Questions
Did you find what you were looking for?

Select Options

  Products 0 Item Selected
Image
Part #
Description
Price
Stock
Quantity
HOBO MX Carbon Dioxide/Temp/RH Data Logger
MX1102A
HOBO MX Carbon Dioxide/Temp/RH Data Logger
Your Price $630.00
Check Availability  
  Accessories 0 Item Selected
Notice: At least 1 product is not available to purchase online
×
Multiple Products

have been added to your cart

There are items in your cart.

Cart Subtotal: $xxx.xx

Go to Checkout

In The News

Three Decades of Research at Acton Lake

A multi-disciplinary team at Miami University, Ohio, has been studying the environmental change at Acton Lake for over three decades. Using three different NexSens buoys over this time, the team has an incredible archive of data that is helping build a picture of Acton’s past, present, and future. Until recently, a NexSens CB-50 buoy was used alongside other environmental monitoring at Acton Lake. In May 2025, the Miami team deployed a new XB-200 buoy , future-proofing their ongoing monitoring using real-time buoy systems. Acton Lake, a small hypereutrophic reservoir in southwest Ohio, covers 2.4km² and has a maximum depth of about 8m. The dam was built in 1956, and the lake has a large agricultural watershed.

Read More

Source Water Monitoring in Albany, New York: Tracing Water Quality throughout Tributaries

Thousands of US cities pull their drinking water from natural source waters like reservoirs, rivers, and streams, making overall watershed health a key consideration for water providers. In Albany, New York, the Albany Department of Water and Water Supply delivers drinking water to over 100,000 residents as well as monitors and manages the larger drinking water supply watershed. Hannah Doherty, Environmental Specialist at the Albany Department of Water and Water Supply , spends her days working with a small team to monitor the drinking supply and the connected water bodies. Doherty explains, “We’re the first to encounter the water that ends up being the drinking water.

Read More

Wildfire Prevention in the Sierra Nevada Region with the Yuba Watershed Institute

Though recent wildfires have sparked new conversations about wildfire management and response, groups like the Yuba Watershed Institute have been monitoring the forests and water resources of the Sierra Nevada region for decades, managing approximately 5,000 acres of land with the Bureau of Land Management (BLM) and about 7,000 acres in private land partnerships. The goal of the Institute is to work with local communities and land agencies to improve watershed and forestry management through informed practices and public outreach. The goals of the Yuba Watershed Institute are three-fold: Improve the ability of fire suppression agencies like the California Department of Forestry and Fire Protection ( CAL FIRE ) and the US Forest Service.

Read More