The Digital Voltage Indicators(DVI) are single point instruments designed to read the voltage on a conductor up to 500 kV line-to-ground. The large LED readout is easy to read on the end of a long hot stick and can be used on overhead lines or in underground applications with an underground bushing probe, sold separately. The DVI emit an audible alarm when voltage above 100 VAC is detected. They are very easy to use as there are no range selector switches or settings to be made just contact the conductor and read the display.