1、Multiple Function: Top induction type electrical tester pen, bottom contact type multimeter, with adjustable sensitivity, automatic range, automatic shutdown, flashlight low battery indicator function. 2、Measuring Parameters: This multimeter can measure diode, AC DC voltage, resistance, frequency, continuity, V alarm, and live wire inspection, and can be used as a professional voltage detector. 3、Power Supply Method: The multimeter has a rechargeable 3.7V 400mAh lithium battery, ensuring long endurance, and is equipped with a USB cable for charging, making it easy to use at any time. 4、LCD Color Screen: The digital multimeter adopts an LCD color display screen, which clearly displays measurement data, intuitive and convenient, greatly improving detection efficiency. 5、Portable Design: This electrical testing pen is handheld design, with comfortable grip, making it easy to operate and carry, suitable for various circuit maintenance scenarios.