Electrical testers are troubleshooting tools designed to test the presence of voltage, detect continuity, measure current, and identify motor phase rotation.
Testers are available in several variations. Contact and non-contact voltage testers are pen-like devices that detect and indicate, with light and sound, the presence of voltage. Current testers use clamp or jaw configurations to wrap around a cable and measure current at that point in the circuit. Continuity testers use probes to isolate a component and detect a complete path.
Electrical testers are often handheld and field-ready, built with rugged housing that can withstand frequent use.