A miniature, waterproof one-channel temperature data logger, this model is value-priced for short-term shipping applications or long-term deployment. Data logger alarm LEDs flash if temperatures have exceeded user-set levels and delay options, and provide visible verification that temperatures have been within the desired range throughout deployment. This 64K model stores approximately 52K of 10-bit temperature readings. For accurate temperature measurement in sunlight a solar radiation shield is required (RS1 Solar Radiation Shield, assembly required; M-RSA pre-assembled Solar Radiation Shield)..

Includes:

• (1) Onset HOBO UA-001-64, Waterproof 64K Pendant Temperature/Alarm Data Logger
• Required HOBOware 2.x or later USB cable (included with software); Pendant Optic USB Base Station & Coupler (BASE-U-1) ;Optic USB Base Station(BASE-U-4) or HOBO Waterproof Shuttle (U-DTW-1) & Coupler (COUPLER2-A)  

Specifications:

• Channels:     One Internal Temperature Sensor
• Data Storage Capacity:     Approximately 52,000 Readings/Samples
• Sampling Intervals:     User-selectable, 1 second to 18 hours
• Alarms:     High and low alarm-indication LEDs with user settable levels and delay options
• Temperature Range:     In Air: -20°C to 70°C (-4°F to 158°F);In Water: 0°C to 50°C (32°F to 122°F)
• Accuracy:     0.47°C (0.85°F) at 25°C (77°F)
• Resolution:     0.10°C (0.18°F) at 25°C (77°F)
• Response Time:     In Airflow of 1 m/s: 10 minutes, typical to 90%;In Water: 5 minutes, typical to 90%; Operating Range:     In Water/Ice: -20°C to 50°C (-4°F to 122°F);In Air: -20°C to 70°C (-4°F to 158°F)
• Time Accuracy:     ± 1 minute per month at 25°C (77°F)
• Water Depth Rating:     30 m from -20° to 20°C (100 ft from -4° to 68°F)
• Battery:    User Replaceable CR2032 Type Lithium Battery
• Battery Life:    1 Year Typical Use
• Software Compatibility:    HOBOware Version 3.5+
• OS Compatibility:    Windows: Windows 8, 7, Vista and XP (32-Bit and 64-Bit);Mac: OS X 10.6.x, 10.7.x and 10.8.x
• Standards Compliance:     CE
• Dimensions:     58mm x 33mm x 23 mm (2.3" x 1.3" x 0.9")