Important Notice about Products


Notice of a Problem with TR-75wf and TR-75nw

Date Issued: April 11, 2018

We have found the following problem with the TR-75wf and TR-75nw.
We apologize for any inconvenience caused by this problem.

Details of Problem

The TR-75wf and TR-75nw occasionally display and record the internal temperature of the logger instead of the actual sensor measurement.

Affected Products

TR-75wf Firmware Version 1.03 or lower
TR-75nw Firmware Version 1.02 or lower

How to Check the Current Firmware Version

[Logger Screen]
When turning on the power of the TR-75wf/nw, you will see [LXXX] (where XXX represents the version number) on the LCD.
EX: [L102] is the version 1.02.

Open T&D software "TR-7wf/nw for Windows" and connect your device via USB to the computer.
Read off the "Firmware Version" value located at the lower left on the screen.

[T&D WebStorage Service]
Open the Device Settings window for the TR-75wf/nw.
Read off the "Firmware" version next to the "Serial Number" located at the top of the window.


Please update the firmware of your device to the latest version.

【Firmware versions which fix this problem】
TR-75wf Firmware Version: 1.04 or higher
TR-75nw Firmware Version: 1.03 or higher

Download TR-75wf Firmware Update Tool

Download TR-75nw Firmware Update Tool