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  • AUT500: 14 Function Automotive Digital Multimeter

Automotive Multimeter with Temperature, RPM, Dwell Angle, Duty Cycle and Pulse Width

The Extech AUT500 Automotive Multimeter was designed specifically for automotive technicians, DIYers, and modders who demand a tough meter that's waterproof and shock resistant. The AUT500 Automotive MultiMeter delivers every multimeter function you need to effectively troubleshoot automotive and fleet electrical and electronic systems. Designed to withstand harsh environments and usage, the meter's rugged, double-molded housing is IP67-rated (waterproof and dustproof) as well as drop-tested to 6 feet. For shade-tree mechanics or crews doing roadside fleet repairs, using a DMM outdoors during harsh conditions is no longer a concern no matter the weather. Includes the AUT500 Automotive MultiMeter; double-molded test leads; inductive pickup; type K bead wire temperature probe; magnetic hanging strap; 9-volt battery; hard carrying case; operating instructions.


  • RPM measurement using the inductive pickup
  • Duty cycle, pulse width and dwell angle measurement
  • 4000 count backlit LCD
  • Fused current inputs and overload protection on all ranges
  • Data Hold, Relative, and 20A Max Current
  • Includes one 9V battery


DC Voltage400mV0.1mV±(0.5% reading + 3 digits)
4V0.001V±(1.5% reading + 2 digits)
600V1V±(1.8% reading + 2 digits)
AC Voltage50 to 60Hz
400mV0.1mV(1.5% reading + 5 digits)
4V0.001V±(1.0% reading + 3 digits)
40V0.01V±(1.5% reading + 3 digits)
600V1V±(2.0% reading + 4 digits)
DC Current400μA0.1μA±(1.5% reading + 3 digits)
4A0.001A±(2.5% reading + 5 digits)
AC Current50 to 60Hz
40mA0.01mA±(1.8% reading + 5 digits)
20A0.01A±(3.0% reading + 7 digits)
Resistance400Ω0.1Ω±(1.2% reading + 4 digits)
4kΩ0.001kΩ±(1.0% reading + 2 digits)
40kΩ0.01kΩ±(1.2% reading + 2 digits)
40MΩ0.01MΩ±(2.0% reading + 3 digits)
Capacitance4nF1pF±(5.0% reading + 50 digits)
40nF10pF±(5.0% reading + 7 digits)
400nF0.1nF±(3.0% reading + 5 digits)
4mF0.001mF±(10.0% reading + 10 digits)
Temp (type-K)-30 to 1000°C1°C±(3.0% reading + 5°C or 8°F)
-22 to 1832°F1°F(probe accuracy not included)
Pulse Width1.0 to 20.0ms0.1ms±(2.0% reading + 20 digits)
Diode1.0mA test; 1mV resolution±(5.0% reading + 15 digits)
ContinuityAudible threshold: 35ΩTest Current:<1mA DC typical
Frequency4.000Hz0.001Hz±(1.5% reading + 5 digits)
400.0Hz0.1Hz±(1.2% reading + 2 digits)
Sensitivity: >5V RMS up to 40MHz and >15 VRMS over 40MHz
Duty Cycle0.5 to 99.9%0.10%±(2.0% reading + 5 digits)
Pulse width: 100µs to 100ms; Frequency: 5Hz to 100kHz; Sensitivity: >5V RMS
RPM 4 (tachometer)600 to 4000 RPM1 RPM±(2.0% reading + 4 digits)
1000 to 12000 x10 RPM10 RPM
RPM 2/DIS300 to 4000 RPM1 RPM
1000 to 6000 x10 RPM10 RPM
Effective Reading >600V
DWELL ANGLE4 CYL 0 to 90.0°0.1°±(2.0% reading + 4 digits)
5 CYL 0 to 72.0°
6 CYL 0 to 60.0°
8 CYL 0 to 45.0°




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AUT500: 14 Function Automotive Digital Multimeter

  • รหัส/รุ่น: AUT500
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