Stewart and Stevenson DAS4xx 3.8.4 could be downloaded from 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 software belongs to System Utilities. This program is a product of Stewart & Stevenson.
From the developer:
Stewart and Stevenson DAS4xx is a data acquisition system with thirty-two configurable channels of information.
This software is able to receive data from up to eight different COM ports, each COM port being able to receive up to 128 unique serial data positions.
You may want to check out more software, such as PockeTwit, GltZpr or GltLife, which might be similar to Stewart and Stevenson DAS4xx.