【Usages】Designed to accurately and safely troubleshoot a variety of electrical problems in the automotive and household industries. 【With Data Hold Function】Measuring instrument with data hold function, easier to read data. 【Large Digital Display】Features a large digital display for quick battery check and accurate results. 【Muti-Function】The voltage test function for AC and DC voltages. Low battery indicator function. 【Support Buzzer/Diode On-Off Tester】Support test function for buzzers and diodes, overload protection function.