Because 1Tool communicates directly with hardware COM ports, some antivirus programs may flag it as suspicious. This is a false positive. Whitelist the CAREL domain and the downloaded .exe file before installing.
Note that 1Tool requires a valid hardware dongle (USB key) or a digital software license to function beyond standard trial limitations. download 1tool carel link
A sub-utility within the suite that handles the actual upload of compiled binaries to the controller, live debugging, and variable monitoring. Guidelines for Downloading and Installing CAREL 1Tool Because 1Tool communicates directly with hardware COM ports,
CAREL 1Tool is a high-level development environment designed specifically for HVAC/R automation professionals. It allows engineers to manage the entire development lifecycle of a control system, from hardware configuration and control logic design to user interface creation and final debugging. Note that 1Tool requires a valid hardware dongle