Data Logger for Precise Water Temperature Measurements
Designed for durability, the compact HOBO MX2201 waterproof temperature logger is ideal for measuring temperature in streams, lakes, oceans, and in soil environments. Data collection in the field has never been easier! The logger leverages the power of Bluetooth Low Energy (BLE) to deliver accurate temperature measurements straight to your iOS or Android mobile device.
HOBO MX2200 series - Underwater Data Logging
The water temperature loggers of the HOBO MX2200 series allow the user convenient configuration and fast wireless downloads for the proven TidbiT and pendant loggers! Equipped with Bluetooth Low Energy (BLE), these models deliver high-accuracy temperature measurements directly to your iOS or Android mobile device. Thus, there is no need for a laptop or waterproof shuttle on-site.
Wireless Instrument for Water Temperature Measurements
The HOBO MX2201 data logger measures air temperature and water temperature and is suitable for use in both fresh and saltwater environments, indoors and outdoors. The recorded water temperatures can be transferred wirelessly and analyzed with the free HOBOmobile app. Mounting tabs are available for easy positioning of the logger.
- Recording of water temperature
- Waterproof to 30m (100 feet)
- ±0.5 °C accuracy
- Large storage capacity for 96,000 readings
- LED alarm notifies you when the temperature exceeds set thresholds
- User-replaceable battery
- Convenient wireless setup and download via Bluetooth Low Energy (BLE)
Documentation HOBO MX2201
Data Analysis with HOBOconnect
The HOBO MX2201 data logger requires the free HOBOconnect app and a compatible mobile device. This allows you to effortlessly configure the wireless data logger. Using the HOBOconnect app, you can easily download the values and temperature data recorded by your devices' sensors.
Configuration and download via web-based software - MX Gateway
The new MX Gateway automatically collects and transfers data from your MX Bluetooth data loggers directly into the cloud! The web-based HOBOlink® Software lets you manage your data loggers remotely, set alarm notifications and create custom dashboards, saving you time by reducing the need for on-site analysis. Find out more...Features of the HOBO MX2201 Data Logger
Technical Specifications
| Monitoring Parameters | Water temperature |
| Operating Range | -20 °C to +50 °C (-4 °F to 122 °F) water temperature |
| Buoyancy (freshwater) | 2g (0.07 oz) positive |
| Waterproof | up to 30.5 m |
| Radio Power | 1 mW (0 dBm) |
| Wireless range | Approximately 30.5 m (100 ft) line-of-sight |
| Wireless data standard | Bluetooth Low Energy |
| Log Interval | 1 second to 18 hours |
| Time accuracy | ±1 minute per month at 25 °C (77 °F) |
| Battery | CR2032 3V lithium, user-replaceable |
| Battery Life | 1 year typical at 25 °C (77 °F) with a logging interval of 1 minute and Bluetooth always On 2 years typical at 25 °C (77 °F) with a logging interval of 1 minute and Bluetooth always Off Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. |
| Memory | 96,000 measurements |
| Memory download duration | approx. 45 seconds |
| Materials | Polypropylene case, EPDM O-ring |
| Size | 3.35 x 5.64 x 1.6 cm |
| Weight | 12.75 g |
| Protection class: | IP 68 |
| For more detailed product specifications, please read the User’s Guide | |
Temperature sensor
| Temperature range | -20 °C to +70 °C (-4 °F to +158 °F) in air -20 °C to +50 °C (-4 °F to +122 °F) in water |
| Accuracy |
±0.5 °C from -20 °C to +70 °C (-4 °F to +158°F) |
| Resolution |
0.04 °C |
| Drift | <0.1 °C (0.18 °F) per year |
| Response Time | 17 minutes typical to 90% in air moving 1 m/s, unmounted 7 minutes typical to 90% in stirred water, unmounted |