HOBO MX2203 & MX2204 TidbiT Waterproof Temperature Data Loggers | Onset

HOBO MX Series Waterproof Temperature Data Loggers

HOBO MX2203 & MX2204 TidbiT Data Loggers

The HOBO MX2203 and MX2204 TidbiT waterproof temperature loggers leverage the power of Bluetooth Low Energy (BLE) to deliver high-accuracy temperature measurements directly to your iOS or Android mobile device. Designed for durability, these rugged waterproof loggers are ideal for long-term deployments in streams, lakes, and oceans. Data collection in the field has never been easier! Remotely access your data in Onset's cloud-based HOBOlink software with the new MX Gateway.

Supported Measurements:

  • Temperature
  • Water Temperature

Key Advantages:

  • Convenient wireless setup and download via Bluetooth Low Energy (BLE)
  • Large memory stores 96,000 measurements
  • Waterproof boot protects the logger during deployment
  • LED alarm notifies you when temperature exceeds set threshold
  • Water detection feature conserves battery life
  • Works with Onset's free HOBOmobile app
  • ±0.2°C (±0.36°F) accuracy

Note: Specific waterproof depths and battery replacement details vary by model.

Product Specifications

Feature HOBO MX2203 HOBO MX2204
Temperature Sensor
Range -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in water -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 17 minutes typical to 90% in air moving 1 m/s, unmounted;
7 minutes typical to 90% in stirred water, unmounted
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) 3.1 g (0.11 oz) negative 7.6 g (0.27 oz) negative
Waterproof To 122 m (400 ft) 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.
Note: Faster logging intervals, statistics sampling, 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 Download Approximately 45 seconds; may take longer the farther the device is from the logger
Wetted Materials Polypropylene case, EPDM O-ring, stainless steel screws, Santoprene® (TPE) boot Epoxy case, Santoprene® (TPE) boot
Dimensions 4.45 x 7.32 x 3.58 cm (1.75 x 2.88 x 1.41 inches) 4.06 x 6.99 x 3.51 cm (1.6 x 2.75 x 1.38 inches)
Weight 36.2 g (1.28 oz) 32.8 g (1.16 oz)
Environmental Rating IP68

Regulatory Compliance: 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.

Contact Information

Sales

  • Email: sales@onsetcomp.com
  • Call: 1-508-759-9500
  • In U.S. toll free: 1-800-564-4377
  • Fax: 1-508-759-9100

Sales hours: 8am to 5pm ET, Monday through Friday

Technical Support

Technical Support hours: 8am to 8pm ET, Monday through Friday

Onset Computer Corporation
470 MacArthur Boulevard
Bourne, MA 02532

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HOBO MX2203 MX2204 Datasheet Acrobat Pro DC 19.21.20049 mPDF 7.1.4

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