Onset UX100-003 HOBO Temperature/Relative Humidity 3.5% Data Logger (-20°~70°C; 15%~95%)

Temperature Sensor: 

  Range: -20° to 70°C (-4° to 158°F) 

  Accuracy: ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F)

  Resolution: 0.024°C at 25°C (0.04°F at 77°F)

  Response Time: 4 minutes in air moving 1 m/s (2.2 mph) 

RH Sensor: 

  Range: 15% to 95% (non-condensing) 

  Accuracy: ±3.5% from 25% to 85% including hysteresis at 25°C (77°F); below 25% and above 85% ±5% typical 

  Resolution: 0.07% at 25°C (77°F) and 30% RH  

  Response Time: 43 seconds to 90% in airflow of 1 m/s (2.2 mph)

Logger Operating:

  Range Logging: -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing) 

  Launch/Readout: 0° to 50°C (32° to 122°F) per USB specification

Logging Rate: 1 second to 18 hours, 12 minutes, 15 seconds 

Time Accuracy: ±1 minute per month at 25°C (77°F)

Power Source: One 3V CR2032 lithium battery and USB cable

Memory: 128 KB (63,488 measurements, maximum)

Size: 3.66 x 8.48 x 1.52 cm (1.44 x 3.34 x 0.6 in.) 

Weight: 30 g (1.06 oz)