High voltage tester CAT IV 1000V for checking the high voltage on electric and hybrid vehicles. Voltage tester to check for the existence &/or absence of high voltage on hybrid/electric vehicles.CAT IV 1000V suitable for both DC and AC voltage testing: DC 6- 1000V / AC 24- 1000V. LCD display resolution to 1V. Bar graph displays voltage range 6, 12, 24, 50, 120, 230, 400, 690, 1000V. Includes a self test function and illumination light. Checks DC voltage polarity and continuity.