Data logger for underwater light recording and water temperature
Designed for durability, this compact water data logger is ideal for measuring temperature in streams, lakes, oceans and soils. On-site data collection has never been easier! Use Bluetooth Low Energy (BLE) to deliver accurate water temperature and relative light level measurements directly to your iOS or Android mobile device.
Underwater data loggers of the HOBO MX2200 series
The water temperature loggers of the HOBO MX2200 series allow the user convenient configuration and fast downloads via WLAN for the proven TidbiT and Pendant loggers! These models are equipped with Bluetooth Low Energy (BLE) and deliver highly accurate temperature measurements directly to your iOS or Android mobile device. There is no need for a laptop or waterproof shuttle on site.
Wireless measuring device for underwater light recording and water temperature
The HOBO MX2202 is suitable for a variety of indoor, outdoor and underwater applications in both fresh and salt water.
- Records relative light level and water temperature
- Waterproof to 30m (100 feet)
- ±0.5 °C accuracy
- Large memory capacity for 96,000 readings
- User replaceable battery
- LED alarm notification when temperature exceeds set thresholds
- Wireless setup and download via Bluetooth Low Energy (BLE)
- Compatible with the MX Gateway for web-based real-time monitoring
HOBO MX2202 documentation
Webinar: TidbiT and Pendant water temperature data logger
Take part in our webinar and get to know our HOBO® temperature data loggers from the MX2200 series.
Enjoy convenient, wireless setup and readout with Onset's proven line of Pendant and TibiT data loggers for river, lake, ocean, air and soil temperatures.
Configuration and download via Bluetooth - HOBOconnect
The HOBO MX2202 data logger requires the free HOBOconnect app and a compatible mobile device. This allows you to configure the loggers effortlessly. With the HOBOconnect app, you can easily download the values and data recorded by the sensors on your devices.
Configuration and evaluation via web software - MX Gateway
The new MX Gateway automatically collects and transfers the data from your MX Bluetooth data loggers directly to the cloud! With the web-based HOBOlink® software, you can remotely manage your data loggers, set alarm notifications, create customized dashboards, and save time by reducing on-site evaluations. Learn more...Specifications and technical data
| Measured values | Temperature, water temperature, light intensity |
| Operating range | -20 °C to +70 °C (-4 °F to 158 °F) in air |
| Wireless range | Approx. 30.5 m (100 ft) with line of sight |
| Radio power | 1 mW (0 dBm) |
| Memory interval | 1 second up to 18 hours |
| Buoyancy (fresh water) | 2g (0.07 oz) positive |
| waterproof | up to 30.5 m |
| memory | 96,000 measurements |
| battery | CR2032 3V lithium, replaceable |
| Battery life | 1 year at 25 °C (77 °F) with a storage interval of 1 minute and activated Bluetooth 2 years at 25 °C (77 °F) with a storage interval of 1 minute and activated Bluetooth Shorter storage and measurement intervals can affect battery life |
| Time accuracy | ±1 minute per month at 25 °C (77 °F) |
| Duration of a memory download |
Approx. 45 seconds; can be longer if there is a greater distance between the device and logger |
| Materials exposed to moisture | Polypropylene case, EPDM O-ring |
| Case size | 3.35 x 5.64 x 1.8 cm |
| Weight | 12.75 g |
| Protection class | IP68 |
| For more detailed product specifications, please read the user manual | |
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 |
| Response time | 17 minutes typical at 90% in air flow of 1 m/s, unmounted 7 minutes Typical at 90% in stirred water, unmounted |
Light sensor
| Range | 0 to 167,731 lux |
| Accuracy | ±10% typical for direct sunlight |
