The Power Probe Tek Maestro is a diagnostic tool that is able to communicate with the Power Probe Tek App. Working in conjunction with the app, this tool allows users to either data-log screenshots or record visual traces of their customer's electrical issues. This tool has the ability to display oscilloscope-type measurements. In addition to the multimeter functions, guided diagnostics, testing of fuel-injectors and the ability to apply battery-supplied power and ground, the Maestro is compatible to connect with the majority of diagnostic scan tools on the market today, the company says.