There was a download of SE309 4.2 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The program lies within System Utilities, more precisely Device Assistants.
This PC program is suitable for 32-bit versions of Windows XP/7/8/10/11. The most frequent installation filenames for the program are: Ad-Aware.exe, nero.exe, NeroHome.exe, SE305.exe and SE309.exe etc. The most popular versions among SE309 users are 4.0, 3.7 and 3.6. This free tool was originally developed by Omega Engineering Inc.
From the developer:
SE309 is a program designed for collecting data from Channel Thermometer which is connected with a PC or notebook. It lets you store as many data sets as you want until memory is full. The unit can store up to 16,000 records per channel at programmed intervals. The REC button can be used to start and stop recording.
You may want to check out more software, such as iDEN Phonebook Manager, which might be related to SE309.