The Power Probe CAT-IV Digital Multimeter, No. PPDMM, a hybrid-safe 600V multimeter, helps technicians make vehicle testing on and off the vehicle faster and more efficient, according to the company. The PPDMM measures AC/DC voltage and current, resistance, frequency, duty cycle, true-RMS, temperature and capacitance. Other features include data hold, min/max capture, relative measurement and diode/continuity testing. This water- and dust-resistant tool features a large LCD screen with bright backlit display, loud indicator tones to hear in a busy shop, a 15-minute auto-off function and rugged, rubberized housing. The PPDMM includes 5' CAT-III 1000V and CAT-IV 600V test leads, alligator clamps, a magnetic holding strap, a temperature thermocouple, spare fuses and three AAA batteries.