The Testo 755-1 is part of Testo's family of voltage and current testers. These are the first of their kind: voltage testers that meet the latest standards and can also measure current. Therefore, it is suitable for nearly all daily electrical measurement tasks. In every application, it automatically selects the correct settings, preventing dangerous misconfigurations. The device includes all essential functions for detecting voltage/voltage absence, measuring current and resistance, as well as for continuity testing. Additionally, the integrated flashlight allows for illuminating dark areas. The test probes can be easily replaced, so the entire device does not need to be replaced in case of damage.