OTC 100 Series Autoranging Multimeter

SKU: M693402 3505A
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M693402 3505A
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High-quality unit features all of the same classic autoranging multimeter functions, plus automotive test-specific measurements.

  • Auto/manual ranging
  • O2 cross counts
  • Duty cycle & frequency to 10M Hz
  • Auto power off can be disabled
  • Data hold freezes data w/push of a button
  • Tests for resistance, continuity, diode & capacitance
  • Measures for rpm, temperature (°F/°C), dwell, fused direct currents up to 10 amps through meter
  • Millisecond pulse width & peak volts measurements for fuel injectors
  • Relative measurement removes test lead resistance from low-resistance measurements
  • Data recording min/max for fluctuating measurements


DC Voltage: 400mV/4/40/400V±0.5%, 600V±0.8%
AC Voltage: 4/40/400V±0.8%, 400mV/600V±1.2%
DC Current: 40/400mA±1.5%, 4/10A±2%
AC Current: 40/400mA±2%, 4/10A±2.5%
Resistance: 400Ω/4/40/400kΩ±1%, 4/40MΩ±2%
Capacitance: 40nF/400nF/4μF /40μF±3%, 400μF/4000μF±20%
Frequency: 1Hz -10MHz±0.1%
Duty Cycle: 0.1%-99.9%±2%
FI PEAK Voltages: 4/40/400V±5%
O2 CROSS COUNT: 0 – 500Hz (per second)±0.5%
RPM: 0 – 10000 RPM±0.5%
Dwell Angle: 1 – 12 CYL±2%
Pulse Width-ms (Negative):1~999ms±2%
Temperature: -50°C - +400°C±0.75%±3°C /-58°F -+752°F±0.75%±5°F
Dimensions: 9.5" × 6.5" × 2.2".
Shipping Weight: 1.15 lbs.

Includes inductive rpm clamp, heavy-duty test leads w/removable alligator clip ends and temperature probe.