The Power Probe PPTAMP Amperage Adapter allows technicians to measure current when applying power and ground to a circuit. The tool connects in line with any Power Probe PP3/PP3EZ/PP4/Maestro and is rated to 20A. It also features minimum and maximum readings as well as a backlit display, giving technicians the ability to not only measure voltage when testing components, but also amperage, which is critical to a complete diagnosis on a circuit's health.