Extech Instruments EX400A Series Digital Multimeter

The Extech Instruments EX400A Series Digital Multimeter is a professional-grade, true RMS instrument designed for accurate electrical measurements in demanding environments. Its large, backlit LCD display ensures clear readability in low-light conditions, while the robust construction provides durability for workshop, field, or industrial use.

This versatile multimeter offers a comprehensive suite of functions, including AC/DC voltage and current measurement up to 600V and 10A respectively, resistance up to 40 MΩ, capacitance, frequency, duty cycle, and diode testing. A significant feature is the built-in Type K thermometer with a supplied probe, allowing for convenient temperature readings without the need for a separate device.

Safety and user protection are paramount. The unit includes input fuse protection and a misconnection warning to help prevent damage to the meter and the circuit under test. Its low current measurement capability down to 0.1µA makes it suitable for sensitive electronic work. The handy relative function allows for easy comparison against a reference value, and continuity testing with audible indication speeds up troubleshooting.

Powered by a single included PP3 battery, the multimeter comes complete with a full accessory kit: test leads for standard measurements, a temperature probe, a protective holster for storage and transport, and a built-in tilt stand for hands-free operation on a benchtop. With its auto-ranging capability and 3.75-digit (3999 count) display, it delivers precise and reliable readings for electricians, technicians, and engineers.