A digital voltage tester is a portable electronic instrument used to measure and display AC and DC voltage in electrical circuits and equipment. It consists of insulated test probes, an electronic measuring circuit, and a digital LCD or LED display that provides accurate voltage readings. Many models also include functions for continuity, polarity, and frequency testing, making them suitable for electrical installation, maintenance, and troubleshooting.
Operation:
Before use, the tester is checked on a known live circuit to ensure it is functioning correctly. The test probes are then connected to the appropriate terminals or conductors, and the measured voltage is displayed digitally on the screen. After testing, the probes are removed, the tester is switched off if required, and stored safely. The instrument should always be used within its specified voltage rating while following appropriate electrical safety procedures.
