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Proving Units
Socket & See SP200 Professional Proving Unit
Test two pole volt testers including multimeters and test lamps The first proving unit to generate AC waveform for a true test Compact design encourages routine safety checks Automatic test function to conserve batteries Step voltage LED's indicate voltage being generated Learn More
Socket & See SP400 Proving Unit
Intelligent voltage ramp for testing multimeters and voltage indicators Generates from 50-690V with a true AC waveform output Non-contact voltage indicator test feature Powerful enough to light old filament style test lamps Convenient for on site checks and best practice Learn More
Martindale PD690SX Proving Unit with CALCHECK
Safely proves the operation of voltage indicators up to 690V Unique CALCHECK function for multifunction tests Individual LED indicators matched to voltage indicator thresholds Long battery life with low battery indicator Includes MAG3 high strength magnetic hanger Learn More
Martindale PD440SX Proving Unit with CALCHECK
Safely proves the operation of voltage indicators and test lamps up to 440V Unique CALCHECK function for multifunction installation tests Individual LED indicators matched to voltage indicator thresholds Long battery life with low battery indicator Includes MAG3 high strength magnetic hanger Learn More All Safe Isolation Proving Units
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