Download of WattsOn 2.1.0.11 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. WattsOn lies within Photo & Graphics Tools, more precisely Viewers & Editors.
The WattsOn installer is commonly called WattsOn.exe. The following version: 5.2 is the most frequently downloaded one by the program users. This free tool was originally created by Elkor Technologies Inc.
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. This free PC program is developed for Windows XP/7/8/10/11 environment, 32-bit version.
From the developer:
The WattsOn universal digital power transducer uses cutting-edge metering technology to provide unprecedented accuracy and metering information for any electrical installation. WattsOn monitors each phase individually and incorporates the functions of single-phase, split-phase, and three-phase meters, to provide over 15 electrical measurements, per phase.
You may want to check out more software, such as SPX Editor, OpenEV or WallMaster Pro, which might be similar to WattsOn.