• Temperature, relative humidity & dew point
  • -4 to 158°F temperature range
    • ±0.38°F from 32 to 122°F accuracy
  • 15 to 95% or 1 to 95% relative humidity
    • ±3.5% or ±2.5% accuracy
  • Easy-to-view LCD display
  • Memory for 84,650 measurements
  • User-selectable sampling rates, 1 second to 18 hours
  • Flexible mounting options
  • Visual high & low alarm thresholds
  • User-replaceable RH sensors


The HOBO UX100 Temp/RH data loggers offer a dramatic price/performance advantage over competitive products by delivering higher accuracy, larger measurement capacity, and more LCD display features to make environmental data collection faster and easier than ever. The loggers provide a variety of features to reduce deployment time, and offer new logging modes for recording and displaying more detailed data without extensive post-processing or memory use.


Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.



Please consider these optional accessories.


This product can be used in the following applications:

Here's how some of our customers use this product...

Verifying HVAC Performance

The Background: Our customer is a property maintenance company that needs a data logging option to verify that HVAC equipment in a building they manage is functioning properly.

The Problem: The customer wants a simple and temporary option. They require 5 units so they are concerned with cost. They also strongly want a product made in the USA.

The Solution: The HOBO UX100 temperature and humidity data logger is a perfect solution for our customer’s needs. The UX100 is easy to install, holds over 200,000 measurements, and can be moved whenever the customer feels they have enough data to verify the equipment is functioning as it should. They also satisfy the customer’s needs in regard to price and iof being made in America.

In Stock

Part Number Price Available
$129.00 47 in stock
$110.00 2 in stock

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