The Fluke PRV240 Compact Portable Safety Proving Unit is a pocket-sized, battery-powered voltage source. It is unique in that it sources stable AC and DC voltages for both LoZ and HiZ instruments.

Designed for Safety and Compliance

The PRV240 provides a safe method to verify that electrical test tools are operating properly before you conduct live tests. The concept of "Test Before Touch" (TBT) involves testing your meter against a known live source before and after the actual measurement. This sequence verifies that your test tool is operating properly during the actual measurement.

Verify your test tool without unnecessary exposure to shock and arc flash. The PRV240 reduces the need for personal protective equipment (PPE) when a known voltage source is not available for tester or multimeter verification, before TBT are performed. Note: PPE is still needed for absence of voltage testing, whenever it is appropriate.