Onset U30-NRC HOBO U30 USB 气象站 (-20~40°C)

Normal Operating Range -20 to 40°C (-4 to 104°F) 

Smart Sensor Connectors: 5 standard, option to expand to 10 

Smart Sensor Network Cable Length: 100 m (328 ft) maximum 

Smart Sensor Data Channels: Maximum of 15 (some sensors use more than one data channel

Logging Interval: 1 second to 18 hours 

Memory: 512 KB nonvolatile flash data storage  

Time Accuracy: 0 to 2 seconds for the first data point and ±5 seconds per week at 25°C 

(77°F) 

Battery Type/Power Source: 4 Volt, 10 AHr, rechargeable sealed lead-acid; external power required using one of these options: AC power adapter (AC-U30) or solar panel (SOLAR-xW) 

Dimensions: 18.9 H x 11.8 D x 18.1 W cm (7.4 H x 4.7 D x 7.1 W inches)

Weight: 2.2 kg (4 lbs 13 oz)