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8K Pendant Temperature/Light Data Logger


This HOBO Pendant® data logger is a miniature, waterproof two-channel temperature and relative light level data logger. The 8K model comes at a great value and is suitable for indoor, outdoor, and und..

  • Brands Onset
  • Product Code: UA-002-08
  • Availability: 7-10 Days

Tags: logger, temperature, light, underwater, outdoor, ua-002-08

8K Pendant Temperature/Light Data Logger

This HOBO Pendant® data logger is a miniature, waterproof two-channel temperature and relative light level data logger. The 8K model comes at a great value and is suitable for indoor, outdoor, and underwater applications. This logger holds approximately 6.5K of 10-bit readings. Use a solar radiation shield for accurate temperature measurement in sunlight. See RS1 Solar Radiation Shield (assembly required) and M-RSA (pre-assembled) Solar Radiation Shield. Note that using a solar radiation shield prevents the use of the light sensor. 


Highlighted Features

  • Low-cost temperature with alarm indication or light intensity
  • Waterproof housing for wet or underwater use
  • Data readout in less than 30 seconds via fast Optic USB interface


In what environment does this data logger operate?

This data logger operates in indoor, outdoor and underwater environments.

What measurements does this data logger support?

The UA-002-08 data logger supports the following measurements: Light Intensity, Temperature and Water Temperature


For more information visit Onset


Product Datasheets

Product Operational Documentation

Product Software

UA-002-08 Datasheet HOBO® Pendant® Data Logger (UA-00x) Quick Start HOBOware Pro Growing Degree Days Assistant - User’s Guide
Pendant Data Loggers Data Sheet    


  • HOBO UA-002-08 Pendant Temperature/Light 8K Data Logger

The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below.


White Papers

On-Demand Webinars

How-To Videos

Informational Pages


Application Stories

Tech Notes

Forum Postings

Robust, low-cost data loggers for stream temperature, flow intermittency, and relative conductivity monitoring Data Logger Basics HOBOware Menus Explained Part 1 Tips on Buying a Data Logger In-Transit Temperature Monitoring of Capitol Christmas Treen-Transit Temperature Monitoring of Capitol Christmas Tree Wildlife Visitation to Compost Experiment Deploying a logger in a culvert pipe Suspending & orienting temp/light pendant UA-002 underwater?
  Groundwater Monitoring with HOBO Data Loggers HOBOware Menus Explained Part 2 What is a Data Logger? National Grid's Deep Energy Retrofit Pilot Program Water Temperature Loggers Survive Airport Bomb Blast Deploying water temp and water level loggers or developing a QAPP Data logger not measuring light intensity
  Monitoring Water Quality with HOBO Data Loggers Readout Basics in HOBOware   Solar Photovoltaic Array Monitoring at Allegheny College Underwater Loggers Aid Discovery of Prehistoric Fish HOBO Waterproof Shuttle U-DTW-1 indicator lights  
  Using Water Quality Loggers to Manage Native Fish Habitats Merging data files using HOBOware Pro, a deep dive   Underwater Temperature Loggers Dive into the Bahamas' "Black Holes" Underwater Data Loggers Assist in Coral Reef Health Research Logger power failure and data loss  
    Launch Basics in HOBOware   Water Temperature Monitoring in Buzzards Bay Watershed Study Shows Warming Trend in Alaskan Streams How often do temperature data loggers need recalibration and/or servicing?  
    Installing HOBOware and Managing License Keys     Scientists Study Coral Health in Seychelles Islands Pendant Optics  
    How to navigate the HOBOware plot screen     Monitoring Environmental Impact off Qatar’s Coastal Waters Proper Coupler Seating, BASE-U-4 (Optic Base station) and the U-DTW-1 (Waterproof Shuttle)  
    How to inspect and lubricate the O-ring on your HOBO Pendant data logger     HOBO Compact Data Loggers Support Coral Reef Health in Micronesia The effects of electroshock fishing on underwater loggers  
    Visit Onset's YouTube Channel     Data Loggers Monitor Lakes for Signs of Global Warming Waterproof shuttle for beginners  


Enclosure Material Polypropylene case; stainless steel screws; Buna-N o-ring
Depth Rating 30 m from -20° to 20°C (100 ft from -4° to 68°F)
Logger Battery Life 1 year typical use
Logger Battery Type CR2032
Logger Dimensions 58 x 33 x 23 mm (2.3 x 1.3 x 0.9 inches)
Logger Environmental Rating IP68
Logger Memory 8K bytes (approximately 3.5K combined temperature and light readings or events
Logger Operating Range In water/ice: -20° to 50°C (-4° to 122°F) In air: -20° to 70°C (-4° to 158°F)
Logger Time Accuracy ± 1 minute per month at 25°C (77°F)
Logger Weight 18 g (0.6 oz)
NIST Certificate Available for temperature only at additional charge; temperature range -20° to 70°C (-4° to 158°F)
Response Time
Response Time Temperature Airflow of 2 m/s (4.4 mph): 10 minutes, typical to 90% Water: 5 minutes, typical to 90%
Safety and Regulatory
Safety and Regulatory CE The CE Marking identifies this product as complying with the relevant directives in the European Union (EU).
Temperature Sensor
Temperature Sensor Resolution Temperature: 0.14°C at 25°C (0.25°F at 77°F), see Plot A in manual Drift: Less than 0.1°C/year (0.2°F/year)