[Multifunctional Multimeter] BT-39M digital multimeter with high can accurately measure voltage (DC 400mV-600V; AC 4V-600V), current (4mA-10A), resistance (4kΩ~40MΩ), continuity, test diodes and batteries (1.5V/9V). This smart multi tester can diagnose automotive, industrial and household electrical issue. [More Features]This AC DC voltmeter features 4000 counts display, auto ranging and data hold function. (only 250g), and easy to use. Pocket size design makes it a perfect handy tool for electricians or daily use. [LCD Backlight & Continuity Buzzer]This voltage electrical tester is equipped with LCD backlight, it is convenient to use in dim area. Built-in buzzer with light flash is for easy circuit continuity detection. Test lead slots beside the voltmeter for good organized. [Overload Protection]Built with dual fast fuse (500mA/600V and 10A/600V), which can protect this manual ranging ammeter voltage tester from potential damage caused by overload conditions. Qualified with IEC61010-1 electronic measuring instruments 600V (CAT II) and 300V (CAT III) standard, this smart multimeter can be your reliable tool in troubleshoot electrical issue or maintaining household appliances. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.