Auto function: Portable Digital Multimeter switches off automatically 15 minutes after switching on. It must be turned off and then turned back on to continue feeding. When the battery is low, the indicator light will go out. Large LCD Display: Digital Automatic Multimeter has a large backlight LCD display, which can be clearly seen from different angles. Convenient reading tool, easy to read displayed value, suitable for laboratories and factories. Non-slip backing: Professional Electrical Tester The multimeter's protective cover is made of orange plastic, non-slip and slightly flexible. To avoid drops and small bumps, you can hold the pop-up stand at a 45 degree angle so that you can easily see the screen. Large Using the Multimeter: Voltmeter can be used as an ammeter, ohmmeter voltmeter can measure AC / DC voltage and current, resistance, capacitance, frequency, temperature, diode and continuity test, transistor test. in order to meet your various needs. Quality Assurance: Digital Multimeter professionals have a 100% satisfaction guarantee. If for any reason you are not satisfied, please contact us. We are responsible for replacement or refund.