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CO2 Bluetooth Smart CO2/Temperature / Relative Humidity Logger for Interior Air Quality MX1102A
The HOBO MX1102 CO2 logger makes it more convenient than ever to measure and record CO2 in buildings and other non-condensing environments.
MX1102 measures CO2 from 0 to 5,000 ppm – and the free HOBOconnect app allows you to access your data from your mobile phone or tablet within a 30 meter range of the logger.
MX1102 also features a USB port so it may be used with a computer that runs HOBOware graphing & analysis software.
Highlights:
- 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 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
Environments the data logger operates in:
This data logger operates in an indoor environment.
Measurements the data logger supports:
The MX1102A data logger supports the following measurements: Carbon Dioxide, Dew Point, Relative Humidity and Temperature.
Included in the box:
-HOBO MX1102 CO2 Data Logger
-Four AA 1.5 V alkaline batteries
You can add the MX Gateway for remote access to your logged data in Onset's cloud-based HOBOlink software application. You can download the HOBO-connect App here:

| 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 |
| The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). | |
- Environment of Use
- Indoor
- Type of Logger
- Multicanal
- Application
- Air quality
- With Display
- LCD
- IP Classification
- Indoor IP50
- Communications
- Bluetooth BLE and USB
- Battery Life
- 6 months
- Memory Capacity
- 128K
WATER (TEMP, LEVEL & QUALITY)
HOBOconnect Monitoring App
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