
HOBO TidbiT MX Temperature 5000' Data Logger
The HOBO MX2204 data logger requires a compatible mobile device or Windows computer and the HOBOconnect app. System requirements for the app can be found at the bottom of the HOBOconnect software page.
Overview
The HOBO MX2204 TidbiT waterproof temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver high-accuracy temperature measurements straight to your mobile device or Windows computer with Onset's free HOBOconnect app. Designed for durability, this rugged waterproof logger is ideal for long-term deployments in streams, lakes, and oceans. The HOBO MX2204 also provides the additional feature to detect and record the presence of water which is ideal for monitoring intermittent water applications. Data collection in the field has never been easier!
Add the MX Gateway for remote access to your data in Onset's cloud-based HOBOlink software.
You can download the HOBOconnect app here:
- Convenient wireless setup and download via Bluetooth Low Energy (BLE)
- Large memory stores 96,000 measurements
- Waterproof to 1500 meters (5000 feet)
- Water detection feature records when logger is in and out of the water
- Waterproof boot protects the logger during deployment
- LED alarm notifies you when temperature exceeds set threshold
- Battery life extension feature
- Works with Onset’s free HOBOconnect app
- ±0.2°C (±0.36°F) accuracy
In what environment does this data logger operate?
This data logger operates in indoor, outdoor and water environments.
What measurements does this data logger support?
The MX2204 data logger supports the following measurements: Soil Temperature, Temperature and Water 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 (MX2203 and MX2204) |
|
Range |
MX2203: -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in water MX2204: -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in water, maximum sustained temperature in water 30°C (86°F) |
Accuracy |
±0.25°C from -20° to 0°C (±.45°F from -4° to 32°F) ±0.2°C from 0° to 70°C (±0.36°F from 32° to 158°F) |
Resolution |
0.01°C (0.018°F) |
Drift |
<0.1°C (0.18°F) per year |
Response Time |
MX2203: 17 minutes typical to 90% in air moving 1 m/s, unmounted; 7 minutes typical to 90% in stirred water, unmounted MX2204: 15 minutes typical to 90% in air moving 1 m/s, unmounted; 4 minutes typical to 90% in stirred water, unmounted |
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 |
-20° to 70°C (-4° to 158°F) |
|
Logging Rate |
1 second to 18 hours |
|
Buoyancy (Fresh Water) |
MX2203: 3.1 g (0.11 oz) negative MX2204: 7.6 g (0.27 oz) negative |
|
Waterproof |
MX2203: To 122 m (400 ft) MX2204: To 1,524 m (5,000 ft) |
|
Water Detection |
Water conductivity level of 100 µS/cm or greater necessary for reliable detection of water. Deionized water or water below 100 µS/cm may not be detected. The water conductivity circuit may not reliably detect water that has frozen around the electrodes, i.e. below 0°C (32°F). |
|
Memory |
96,000 measurements |
|
Battery |
CR2477 3V lithium, user replaceable in MX2203, non-replaceable in MX2204 |
|
Battery Life |
3 years, typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always On in software. 5 years, typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always Off or Bluetooth Off Water Detect in software. Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. |
|
Time Accuracy |
± 1 minute per month at 25°C (77°F) |
|
Full Memory Dowload |
Approximately 45 seconds; may take longer the farther the device is from the logger |
|
Wetted Materials |
MX2203: Polypropylene case, EPDM O-ring, stainless steel screws, Santoprene® (TPE) boot MX2204: Epoxy case, Santoprene (TPE) boot |
|
Dimensions |
MX2203: 4.45 x 7.32 x 3.58 cm (1.75 x 2.88 x 1.41 inches) MX2204: 4.06 x 6.99 x 3.51 cm (1.6 x 2.75 x 1.38 inches) |
|
Weight |
MX2203: 36.2 g (1.28 oz) MX2204: 32.8 g (1.16 oz) |
|
Environmental Rating | IP68 | |
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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.

- Data Logger
- Protective Boot
The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below.
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Preassembled for quick deployment, the solar radiation shield is recommended for temperature and relative humidity measurement accuracy in locations exposed to direct or reflected solar radiation. Mounts on tripods, masts, or flat vertical surfaces. The following loggers require mounting brackets for use with the M-RSA:
- HOBO MX2301 or MX2305 loggers require the MX2300-RS-BRACKET
- HOBO U22 or U23-001 loggers require the U23 Clamp Kit .
The solar radiation shield is recommended for temperature and relative humidity measurement accuracy in locations exposed to direct or reflected solar radiation. Mounts on tripods, masts, or flat vertical surfaces. The RS1 is ideal for use with loggers such as the HOBO MX2300, HOBO Pendant and U-Series data loggers. The following loggers require mounting brackets for use with the RS1:
- HOBO MX2301 or MX2305 loggers require the MX2300-RS-BRACKET
- HOBO U22 or U23-001 loggers require the U23 Clamp Kit .
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Detailed Specifications
HOBO TidbiT MX Temperature 5000' Data Logger
Temperature Sensor (MX2203 and MX2204) |
|
Range |
MX2203: -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in water MX2204: -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in water, maximum sustained temperature in water 30°C (86°F) |
Accuracy |
±0.25°C from -20° to 0°C (±.45°F from -4° to 32°F) ±0.2°C from 0° to 70°C (±0.36°F from 32° to 158°F) |
Resolution |
0.01°C (0.018°F) |
Drift |
<0.1°C (0.18°F) per year |
Response Time |
MX2203: 17 minutes typical to 90% in air moving 1 m/s, unmounted; 7 minutes typical to 90% in stirred water, unmounted MX2204: 15 minutes typical to 90% in air moving 1 m/s, unmounted; 4 minutes typical to 90% in stirred water, unmounted |
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 |
-20° to 70°C (-4° to 158°F) |
|
Logging Rate |
1 second to 18 hours |
|
Buoyancy (Fresh Water) |
MX2203: 3.1 g (0.11 oz) negative MX2204: 7.6 g (0.27 oz) negative |
|
Waterproof |
MX2203: To 122 m (400 ft) MX2204: To 1,524 m (5,000 ft) |
|
Water Detection |
Water conductivity level of 100 µS/cm or greater necessary for reliable detection of water. Deionized water or water below 100 µS/cm may not be detected. The water conductivity circuit may not reliably detect water that has frozen around the electrodes, i.e. below 0°C (32°F). |
|
Memory |
96,000 measurements |
|
Battery |
CR2477 3V lithium, user replaceable in MX2203, non-replaceable in MX2204 |
|
Battery Life |
3 years, typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always On in software. 5 years, typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always Off or Bluetooth Off Water Detect in software. Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. |
|
Time Accuracy |
± 1 minute per month at 25°C (77°F) |
|
Full Memory Dowload |
Approximately 45 seconds; may take longer the farther the device is from the logger |
|
Wetted Materials |
MX2203: Polypropylene case, EPDM O-ring, stainless steel screws, Santoprene® (TPE) boot MX2204: Epoxy case, Santoprene (TPE) boot |
|
Dimensions |
MX2203: 4.45 x 7.32 x 3.58 cm (1.75 x 2.88 x 1.41 inches) MX2204: 4.06 x 6.99 x 3.51 cm (1.6 x 2.75 x 1.38 inches) |
|
Weight |
MX2203: 36.2 g (1.28 oz) MX2204: 32.8 g (1.16 oz) |
|
Environmental Rating | IP68 | |
![]() |
||
![]() ![]() ![]() ![]() |
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.