The MS8040 is a benchtop digital multimeter from Mastech, designed with dual displays showing 22,000 counts and a 44-segment bar graph. It supports true RMS measurements for both AC voltage and current, and includes features like low-pass filters, relative measurements, and peak measurements. The device also features a continuity buzzer and a USB interface for enhanced connectivity. Additional features include auto-ranging, automatic shutdown, and a backlight for better visibility during use.