In terms of price/performance ratio, the GDM-8145 is one of the best choices among digital multimeters. It features a 0.5" LED display with digits displayed in clear red - a resolution of 4 1/2 digits. Measurements include DC voltage/current, AC voltage/current with True RMS, resistance and diode test. AC and AC+DC RMS response provides accurate measurements for equivalent DC energy regardless of waveform. Small voltage offsets are leveled by an automatic zeroing circuit, and protection mechanisms are available throughout the measurement range. All these features provide the user with convenience and functionality in use.