If you’ve picked up a , you know it’s a rugged, reliable little workhorse for monitoring temperature and humidity. But here’s the thing: the hardware is only half the battle. To actually see your data, generate those PDF reports, and export CSV files for Excel, you need the right software.

The software should automatically detect the device.

Sites like Instrument Choice or Test Equipment Depot often host mirrored ZIP files of the drivers and software for their customers.

Ensure you actually pressed the "Start" button on the physical logger (if you didn't set it to "Auto-start") after unplugging it from the PC.

Without this driver, the software will show a "No Device Found" error. 3. How to Connect and Configure Your Logger

Insert the DT-171 directly into a USB port (avoid unpowered USB hubs).

Try a different USB port. If you are on Windows 11, you may need to go to Device Manager and manually update the driver to the Silicon Labs version.

Get Your CEM DT-171 Data Logger Back Online: Software Download & Setup Guide

The DT-171 usually runs on a dedicated software package often titled Because CEM is an OEM manufacturer, the software is sometimes hosted on various distributor sites, but for the safest, "hottest" current versions, you should check:

A common "hot" issue users face is the PC not recognizing the logger even after installing the software. The DT-171 uses a Silicon Labs CP210x USB-to-UART bridge. you downloaded. Open the folder named "Driver."