OTC Tools 3980 750 Series Automotive Digital Multimeter with RPM and Dwell

The OTC 3980 is a professional-grade automotive multimeter designed specifically for technicians working on modern vehicle electrical systems. This True RMS digital multimeter combines all standard electrical testing capabilities with automotive-specific functions including RPM, dwell angle, and pulse width measurements.

Key Measurement Capabilities:

• AC/DC Voltage: Measures from 400mV to 1000V DC and up to 750V AC
• AC/DC Current: Ranges from 400 microamps to 10 amps
• Resistance: 400 ohms to 40 megohms
• Capacitance: 40 nanofarads to 4000 microfarads
• Frequency: 1 Hz to 10 MHz
• Temperature: -58°F to 752°F
• RPM: 0 to 10,000 RPM for engine diagnostics
• Dwell Angle: 0 to 360 degrees
• Duty Cycle: 0.1% to 99.9%

Professional Features:

• True RMS measurement for accurate readings on non-linear loads
• CAT III rated for safe use on hybrid vehicle high-voltage systems
• Backlit display for low-light working conditions
• Auto-ranging for quick setup and measurement
• Min/Max recording to capture intermittent readings
• Data hold function freezes display for easy reading
• RS-232 output with included PC cable and software for data logging
• Auto power-off to preserve battery life

Complete Kit Includes:

• 750 Series Digital Multimeter
• Red and black test leads
• Alligator clip attachments
• RPM pickup adapter for tachometer function
• Temperature probe adapter
• RS-232 PC cable and software
• Protective black canvas carrying case

With high accuracy ratings including ±0.5% for DC voltage and ±0.1% for frequency measurements, the OTC 3980 delivers the precision professional technicians require. The compact design measures approximately 3.6" wide x 1.6" deep x 7.9" tall, making it portable yet rugged enough for shop use. CE approved for safety compliance.