1This is a portable multimeter with high reliability, high safety and automatic measurement. 2With large screen digital and high resolution analog pointer synchronization display function. 3When the voltage is lower than or equal to 7.5V, the alarm will be displayed to ensure the safety of use. 4Auto power off in 15 minutes without any operation, data hold function, large LCD display with switchable backlight, easy to read. 5Full range overload protection and unique design, with RS-232 or USB standard data transfer interface. 6Can test AC & DC current, AC & DC voltage, resistance, capacitance and temperature, etc.