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64K Pendant Temperature/Alarm (Waterproof) Data Logger


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 ha..

  • Brands Onset
  • Product Code: UA-001-64
  • Availability: 7-10 Days

Tags: pendant, temperature, alarm, waterproof, 64k, logger, ua-001-64

64K Pendant Temperature/Alarm (Waterproof) Data Logger

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 the 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).


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-001-64 data logger supports the following measurements: Temperature and Water Temperature


For more information visit Onset

  • HOBO UA-001-64 Pendant Temperature/Alarm (Waterproof) 64K 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
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  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
Alarms High and low alarms can be configured for total amount of contiguous or non-contiguous time outside of user-defined limits between -20° and 70°C (-4° to 158°F)
Logger Accuracy ± 0.53°C from 0° to 50°C (± 0.95°F from 32° to 122°F), see Plot A in manual
Logger Battery Life 1 year typical use
Logger Battery Type CR2032
Logger Dimensions 5.8 x 3.3 x 2.3 (centimeters) and 2.3 x 1.3 x 0.9 (inches)
Logger Environmental Rating IP 68
Logger Measurement Range -20° to 70°C (-4° to 158°F)
Logger Memory UA-001-08: 8K bytes (approximately 6.5K sample and event readings) UA-001-64: 64K bytes (approximately 52K sample and event readings)
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 Resolution Temperature: 0.14°C at 25°C (0.25°F at 77°F), see Plot A in manual
Logger Response Time Airflow of 2 m/s (4.4 mph): 10 minutes, typical to 90% Water: 5 minutes, typical to 90% Time accuracy: ± 1 minute per month at 25°C (77°F), see Plot B in manual
Logger Weight 15.0 g (0.53 oz)
NIST Certificate Available for temperature only at additional charge; temperature range -20° to 70°C (-4° to 158°F)
Water Depth Rating 30 m from -20° to 20°C (100 ft from -4° to 68°F), see Plot C in manual