Extech MA443 400A True RMS AC Clamp Meter, NCV, 1.2 in Jaw

Key features

• Accurate True RMS Measurements - Delivers precise AC current readings up to 400A, even with noisy or distorted waveforms, ensuring electricians and technicians can trust results in real-world conditions.
• Non-Contact Voltage Detection - Features a built-in NCV sensor that quickly identifies live wires without direct contact, adding a layer of safety and convenience during fast electrical troubleshooting.
• Comprehensive Multimeter Functions - More than just a clamp meter, it measures resistance, continuity, capacitance, and frequency, giving you a complete testing toolkit in one compact handheld device.
• User-Friendly Design - Equipped with a backlit display for low-light conditions, data hold for capturing readings, and a slim, lightweight body with 1.2-inch jaw opening that easily fits around conductors.
• Reliable & Portable for Every Job - Ideal for residential, commercial, and HVAC applications; includes auto-ranging, overload protection, and rugged construction to withstand demanding environments.

The Extech MA443 400A True RMS AC Clamp Meter with NCV is a versatile, professional-grade tool designed for accurate and safe electrical testing. Featuring True RMS technology, it ensures precise current readings up to 400 amps, even when dealing with noisy or distorted signals often found in real-world electrical systems. Built with non-contact voltage detection (NCV), the MA443 allows users to quickly identify live wires without risk, making it a must-have safety feature for electricians, technicians, and DIY enthusiasts. In addition to AC current measurement, it functions as a multimeter, offering resistance, continuity, capacitance, and frequency measurements in a single handheld device. With its backlit display, data hold function, and compact 1.2-inch jaw opening, the MA443 is designed for ease of use in both bright and dim environments. Its rugged construction, auto-ranging capability, and overload protection make it durable and reliable for residential, commercial, and HVAC work. Whether you’re a professional or a problem-solver at home, the Extech MA443 delivers accuracy, safety, and portability you can count on.

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