Unique, compact, user-friendly.

The Fluke PRV240 Proving Unit is a portable, battery-operated voltage source in a pocket-sized format. The device provides stable AC and DC voltages for measuring instruments with both high and low input impedance.

Designed with safety and regulatory compliance in mind, the Fluke PRV240 Proving Unit offers a simple and safe way to verify the proper functioning of an electrical measuring device when no known voltage source is available. This allows the measuring instrument to be tested without the need for personal protective equipment before checking live or de-energized power sources. However, depending on the working conditions, minimal personal protective equipment may still be required when using the Proving Unit, such as safety glasses or earplugs.

Using the PRV240 reduces the risk of electric shocks and arc flash incidents, as you do not have to expose yourself to potentially hazardous electrical conditions when verifying the functionality of a measuring device before checking for voltage presence.