Extech EX350 True RMS Digital Multimeter with NCV

The Extech EX350 is an 11-function True RMS autoranging digital multimeter with a built-in non-contact voltage (NCV) detector, combining measurement accuracy with professional safety features for demanding electrical environments. Its 4000-count backlit LCD and 0.5% basic DCV accuracy make it suitable for precision diagnostics on aircraft electrical systems, MRO workbenches, and industrial electrical panels where waveform distortion from variable frequency drives and switching power supplies can cause errors in average-responding meters. The CAT III-600V safety rating ensures compliance with professional safety standards for aircraft and industrial maintenance.

Key Features

• True RMS measurement for accurate readings on distorted AC waveforms, critical for avionics and VFD-driven aircraft systems
• 11 measurement functions: AC/DC voltage and current, resistance, capacitance, frequency, duty cycle, temperature (Type K), diode, and continuity
• Built-in NCV detector for contact-free identification of live conductors
• 4000-count backlit LCD for clear readings in dimly lit hangar and maintenance environments
• 0.5% basic DCV accuracy for reliable voltage measurements
• Autoranging for fast, hands-free range selection during diagnostics
• CAT III-600V safety rating for professional aircraft and electrical work

Specifications

• DC Voltage: up to 600V
• AC Voltage: up to 600V (True RMS)
• DC/AC Current: up to 10A
• Resistance: up to 40MΩ
• Capacitance: up to 60mF
• Frequency: up to 10MHz
• Duty Cycle: 0.1% to 99.9%
• Display: 4000-count backlit LCD
• Basic DCV Accuracy: ±0.5%
• True RMS: Yes
• NCV Detection: Yes
• Safety Rating: CAT III-600V
• Number of Functions: 11

Applications

The EX350 True RMS multimeter is designed for A&P mechanics, avionics technicians, and MRO electricians who work on aircraft with solid-state inverters, variable-frequency AC bus systems, or switching power supplies, environments where non-True-RMS meters produce inaccurate readings. Its NCV detection makes pre-work safety checks faster and more reliable, while the capacitance and frequency functions extend its usefulness to component testing and avionics circuit analysis. Ideal for aircraft electrical troubleshooting, circuit continuity checks, and general electrical maintenance in both hangar and field settings.

Need Your Extech EX350 Calibrated?

• PJi operates an ISO/IEC 17025 Accredited Calibration Lab and provides NIST-traceable calibration for the Extech EX350 at purchase.
• Documentation satisfies FAA Part 145, ISO 9001, and AS9100 requirements.
• PJi is the one-stop source: instrument and certificate in one transaction.

Why Buy from Pilot John International?

• Pilot John International is an authorized Extech distributor with an in-house ISO/IEC 17025 Accredited Calibration Lab.
• One-stop source for Extech instruments and NIST-traceable calibration in a single transaction.
• We serve aviation maintenance, FAA Part 145 repair stations, and industrial MRO facilities.
• Full-catalog availability and same-business-day shipping on in-stock items.