0822 5870 6420 (Anto)

0813 9929 1909 (Fikri)

Phone Office

+62-21 29563045


HOBO Carbon Dioxide - Temp - RH Data Logger MX1102A



Measures and records CO2 in buildings and other non-condensing environments. Works with our free HOBOconnect app for data access right from your mobile phone, tablet, or Windows computer when within 100 feet of the logger.

This logger also features a USB port so it can be used with a computer running HOBOware graphing & analysis software. 

Add the MX Gateway for remote access to your data in our cloud-based HOBOlink software. 


  • Wireless communication via Bluetooth technology
  • Six-month battery life at 5-minute CO2 logging rate
  • Easy to deploy and offload using free HOBOconnect app
  • Visual and audible high & low alarm thresholds
  • Self-calibrating NDIR CO2 sensor technology ensures optimal accuracy and lower maintenance costs
  • Patented connectivity technology

In what environment does this data logger operate?

This data logger operates in an indoor environment.

What measurements does this data logger support?

The MX1102A data logger supports the following measurements: Carbon Dioxide, Dew Point, Relative Humidity and Temperature


Temperature Sensor
0° to 50°C (32° to 122°F)
±0.21°C from 0° to 50°C, see manual for plot (±0.38°F from 32° to 122°F, see manual for plot)
0.024°C at 25°C , see manual for plot (0.04°F at 77°F , see manual for plot)
RH Sensor*

1% to 90% RH (non-condensing)


±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



CO2 Sensor

0 to 5,000 ppm


±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


Auto or manual to 400 ppm


<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
12 minutes to 90% in airflow of 1 m/s (12 minutes to 90% in airflow of 2.2 mph)
1 minute to 90% in airflow of 1 m/s (1 minute to 90% in airflow of 2.2 mph)
1 minute to 90% in airflow of 1 m/s (1 minute to 90% in airflow of 2.2 mph)
Radio Power
1 mW (0 dBm)
Transmission Range
Approximately 30.5 m line-of-sight (Approximately 100 ft line-of-sight)
Wireless Data Standard

Bluetooth Low Energy (Bluetooth Smart)

Logger Operating Range
0° to 50°C ; 0 to 95% RH (non-condensing) (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

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.


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 is visible from 0° to 50°C; (LCD is visible from 32° to 122°F;)

the LCD may react slowly or go blank in temperatures outside this range

7.62 x 12.95 x 4.78 cm (3.0 x 5.1 x 1.88 inches)
267.4 g (9.43 oz)
Environmental Rating