:: Product Information


Data Loggers

Highlighted Features

  • Wireless communication via Bluetooth Low Energy (BLE) Technology

  • Six month battery life at 5-minute CO2 logging rate

  • Easy to deploy and offload using free HOBOmobile App

  • Visual and audible high & low alarm thresholds

  • Self-calibrating NDIR CO2 sensor technology ensures optimal accuracy and lower maintenance costs

  • Patented connectivity technology

This data logger operates in an indoor environment.

The MX1102 data logger supports the following measurements: Carbon Dioxide, Relative Humidity and Temperature


The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.

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 70% RH when CO2 sensor is enabled (non-condensing)?

                             1% to 90% RH when CO2 sensor is disabled (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 70% RH 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)



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 HOBOmobile use, battery life can be reduced by remaining connected, excessive readouts, checking of Full Status Details, 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

The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.

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Dianjiang Group Limited
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Email: Dianjiang_HK@yahoo.com.hk   Hongkong@Dianjiangtech.com
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