HOBO MX1102A Bluetooth CO2 Datalogger

Measuring CO2 from 0 - 5,000 parts per million (ppm) the MX1102A allows you to access data right from your mobile phone or tablet.

Note: The model MX1102A is the replacement for the MX1102 with an improved operating range for CO2 measurement.


  • Wireless communication via Bluetooth Smart
  • Six month battery life at 5-minute CO2 logging rate
  • Easy to deploy and offload using free HOBOmobile App (iOS 8.0-8.3 required; Android app support estimated early Spring 2015)
  • USB port for use with PC running HOBOWare software 
  • Visual and audible high & low alarm thresholds
  • Self-calibrating NDIR CO2 sensor technology ensures optimal accuracy at lower maintenance costs

CO2 Measurement:

Range: 0 to 5,000 ppm

Accuracy: ±50 ppm ±5% of reading at 25°C, <90% RH and 1,013 mbar

Warm-up Time: 15 seconds

Calibration: Auto or manual to 400 ppm

Operating Pressure Range: 950 to 1,050 mbar (use Altitude Compensation for outside of this range)

Compensated Pressure Range: -305 to 5,486 m

Sensing Method: Non-dispersive infrared (NDIR) absorption


Temperature & Humidity

Range: 0° to 50°C; 1% to 90% (non-condensing);

Accuracy: ±0.21°C from 0° to 50°C; ±2% from 20% to 80% typical at 25°C

Resolution: 0.024°C at 25°C; 0.01% at 25°C


Wireless Logger

Transmission Range: Approximately 30.5 m line-of-sight

Wireless Data Standard: Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0)

Memory: 128 KB (84,650 measurements, maximum)

Download Type: USB 2.0 interface or via Bluetooth Smart

Size: 7.62 x 12.95 x 4.78 cm; Weight: 267.4 g

Environmental Rating: IP50

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.
Battery life can be reduced by excessive use of Bluetooth connection


HOBOMobile system requirements:

  • iOS 9.2 or 9.3
  • Android 4.4, 5.0, 5.1 or 6.0.1
  • Bluetooth 4.0
  • NOT currently compatible with Windows Mobile devices


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MX1102 CO2 bluetooth logger

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