Extech EX355 True RMS Digital Multimeter with NCV

The Extech EX355 is a 12-function True RMS autoranging digital multimeter with a built-in non-contact voltage (NCV) detector and Type K temperature input, offering a comprehensive suite of measurement capabilities in a professional-grade handheld package. Its 6000-count backlit LCD delivers finer resolution than standard 4000-count meters, making it better suited for precision diagnostics on aircraft electrical systems, avionics circuits, and critical MRO applications. With 0.5% basic DCV accuracy, min/max recording, data hold, and a CAT III-600V safety rating, the EX355 is a step-up True RMS multimeter for technicians who regularly perform detailed electrical troubleshooting and component analysis.

Key Features

• True RMS for accurate AC measurements on non-sinusoidal waveforms including aircraft inverter and VFD outputs
• 12 measurement functions including Type K temperature from -40°F to 1832°F (-40°C to 1000°C)
• 6000-count backlit LCD, higher resolution than standard 4000-count multimeters for finer measurement detail
• Built-in NCV detector with audible and LED alert for contact-free live circuit identification
• Capacitance up to 60mF and frequency up to 10MHz for electronic component testing
• MIN/MAX recording, data hold, and relative (REL) mode for comparative and ongoing measurements
• CAT III-600V safety rating for professional aircraft and industrial electrical work

Specifications

• DC Voltage: up to 600V
• AC Voltage: up to 600V (True RMS)
• DC/AC Current: up to 10A
• Resistance: up to 60MΩ
• Capacitance: up to 60mF
• Frequency: up to 10MHz
• Duty Cycle: 0.1% to 99.9%
• Temperature (Type K): -40°F to 1832°F (-40°C to 1000°C)
• Display: 6000-count backlit LCD
• Basic DCV Accuracy: ±0.5%
• True RMS: Yes
• NCV Detection: Yes
• Number of Functions: 12
• Safety Rating: CAT III-600V

Applications

The EX355 is a versatile True RMS digital multimeter for aviation maintenance professionals, MRO electricians, and avionics technicians who need finer measurement resolution and a broader function set than entry-level meters provide. The 6000-count display and True RMS capability make it well-suited for precision voltage measurements on aircraft power systems, avionics bench testing, and detailed diagnostics on aircraft components where accurate AC and resistance readings are essential. The Type K temperature input adds thermal diagnostic capability for aircraft motor and connector inspections, while the NCV detector supports rapid, contact-free hazard identification before electrical work begins.

Need Your Extech EX355 Calibrated?

• PJi operates an ISO/IEC 17025 Accredited Calibration Lab and provides NIST-traceable calibration for the Extech EX355 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.