Maximum Display: The display can show up to 4000, providing a clear digital readout and making it easy for users to accurately obtain measurement results. In addition, it supports diode and transistor test functions, as well as voltage non-contact test (NCV) function, which is more practical Multiple Practical Functions: Voltage current tester not only supports basic voltage, current, and resistance measurement, but also has a variety of practical functions such as HFE transistor measurement, NCV non-contact voltage detection, diode/transistor testing, turn off testing, Data retention/automatic shutdown, low voltage display, LCD backlight, which enhances the user's experience High Safety Standard: Capacitance resistance tester meets CAT II 1000V and CAT II 600V safety ratings and has passed a 1 meter drop test. It can measure AC and DC voltages up to 1000V and supports current measurements up to 10A Compasive Mistake Protection: Portable digital multimeter has comprehensive mis-test protection and is capable of withstanding voltage shocks of up to 1kV, providing a higher level of safety. Suitable for a wide range of electronic and electrical engineering measurement tasks Clear LCD Display: The large LCD screen provides clear display, with a sampling rate of 4 times per second providing users with more accurate readings. It has low power consumption and automatic power-saving functions, and a long battery life (>500 hours) (Battery NOT Included) Specifications: Display count: 4000 Safety level: CAT II 1000V, CAT III 600V Drop test: 1m Power supply: 1.5V AA Batteryx 2 (NOT Included) Fast sampling rate: up to 4 times per second Fast capacitance measurement: Measure 1mF within 4 seconds Display screen: 56.5mm x 36mm Net weight of product: 330g Product size: 175mm x 83mm x 53mm