Equus Products 3340 Professional Automotive Digital Multimeter, Black

Features and Benefits:

• Pro quality features help pinpoint engine problems
• Auto-Ranging, auto shut-off, over-load protection with a 10 MegOhm impedance prevents damage to ECU
• Tests alternator diodes, duty cycle, solenoids, breaker points, wiring, switches, and more
• Automatic zero adjustment, reverse polarity protection
• Monitors vehicle RPM (including Coil On Plug vehicles)