The ES5108 is design for 3 1/2-Digit Digital Multimeter which combines an integrated A/D converter, MAX/MIN, hold, short circuit beeper, low battery detector, a frequency counter, and serial data output. A 'HOLD' input allows the ES5108 to hold the current A/D readout or frequency readout. The frequency counter is auto-ranging from 2KHz to 20MHz over a five decade range with KHz and MHz annunciators. Short circuit beeper will sound whenever the readout is less than 30 after enabling the short circuit beeper. This feature is useful in detecting short circuits without watching the LCD.