The Extech EX840 is a high-performance, professional-grade multimeter designed for accurate and reliable electrical measurements in various applications. This versatile handheld instrument combines precision, versatility, and essential features to provide comprehensive testing capabilities for professionals in electrical and electronic fields. The Extech EX840 offers a wide range of measurement functions, including AC/DC voltage, AC/DC current, resistance, capacitance, frequency, duty cycle, temperature, diode test, and continuity test. It is equipped with high-quality test leads and probes that ensure accurate and consistent measurements. The multimeter features a large, backlit LCD display with a high contrast ratio, allowing for easy reading of measurement results even in low-light conditions. It may include additional features such as data hold, peak hold, relative mode, and auto-ranging for enhanced functionality and convenience during measurements. Designed for durability and user convenience, the Extech EX840 has a rugged and ergonomic design that withstands tough working conditions. It is typically powered by batteries, providing portability and allowing for on-the-go testing in various locations. The Extech EX840 is suitable for a wide range of applications, including electrical maintenance, troubleshooting, HVAC, automotive, and industrial electrical systems. It is particularly useful for professionals who require accurate and reliable measurements for diagnosing faults, verifying circuit performance, and conducting detailed electrical testing.