MX2204 HOBO TidbiT MX Temperature 5000' Data Logger

Range
-20° to 70°C in air; -20° to 50°C in water, maximum sustained temperature in water 30°C
-4° to 158°F in air; -4° to 122°F in water, maximum sustained temperature in water 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 per year

Logger
Logger Operating Range: -20° to 70°C(-4° to 158°F)
Buoyancy (Fresh Water)
7.6 g negative
0.27 oz negative
Waterproof To 1,524 m

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).
Radio Power 1 mW

Transmission Range: Approximately 30.5 m line-of-sight
Wireless Data Standard: Bluetooth Low Energy (Bluetooth Smart)
Logging Rate; 1 second to 18 hours
Time Accuracy
±1 minute per month at 25°C
±1 minute per month at 77°F