Pro quality features help pinpoint engine problems - Auto-Ranging, auto shut-off, over-load protection - 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) - Min/Max and Hold buttons save retrieved data - Unit provides hands-free testing and includes test lead holders - Rugged corner guards provide drop protection 

• Pro quality features help pinpoint engine problems
• Auto-Ranging, auto shut-off, over-load protection
• 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)
• Min/Max and Hold buttons save retrieved data
• Unit provides hands-free testing and includes test lead holders
• Rugged corner guards provide drop protection

Product Features GOOD BETTER BEST Equus Products 3310 3320 3340 FUNCTIONS DC Volts 200mV / 2V / 20V / 500V Auto-Range 200mv / 2V / 20V / 200V / 600V Auto-Range 400mv / 4V / 40V / 400V / 600V AC Volts 200V / 500V Auto-Range 2V / 20V / 200V / 600V Auto-Range 400mV / 4V / 40V / 400V / 600V Resistance 200 / 2K / 200K / 20MΩ Auto-Range 200Ω / 2KΩ / 20KΩ / 200KΩ / 2MΩ/ 20MΩ Auto-Range 400Ω / 4KΩ / 40KΩ / 400KΩ / 4MΩ/ 40MΩ Diode Test YES YES YES Battery Test 1.5V / 6V / 9V / 12V 1.5V / 6V / 9V / 12V 1.5V / 6V / 9V / 12V DC Current / mA 2mA / 20mA / 200mA Auto-Range 20mA / 200mA / 2A Auto-Range 40mA / 400mA / 15A DC Current / Amperage 10A 10A 15A Continuity Check w/ Audible Beep YES YES YES AC Current / mA   Auto-Range 20mA / 200mA Auto-Range 40mA / 400mA AC Current / Amperage     15A Duty Cycle     0.1 to 99.9% Dwell     1 to 12 Cylinders Frequency     9.999Hz to 10MHz Tachometer     0 to 10,000 RPM Tachometer / Coil-on-Plug     0 to 10,000 RPM Temperature     0° to 752° F, -20 to 400°C Pulse Width / ms     1- 999 ms Inductive Current (Requires OptionalProbe #3347)     400A / 1,000A FEATURES 10 MegOhm Input Impedance Overload Protection Auto Zero Adjust Reverse Polarity Protection UL/cUL Listed Auto Power Off Back Stand Corner Drop Guards Auto-Ranging™ Scales   LED Indicator for Battery Check   Single Setting Voltage Function     Data Save Min/Max     Data Hold     Note: Based on publicly available information, manufacturer may change specifications without public notice ©2006 IEC. All rights reserved.