General Specifications Display: 3 3/4 Digit LCD, max. reading of 3999. Function and unit indication. Overrange indication : “OL” indicated. Polarity indication: automatic; positive implied; negative indicated. Zero adjustment: automatic for all functions and ranges except DC current (Zero adjustment button). Ranging: manual function and range selection with rotary selector switch. Autoranging for frequency measurement. Special functions: Data Hold, Peak Hold Operating principle: dual slope integration Sampling rate: 2/sec, nominal. Maximum voltage between any terminal and earth ground: 600V Low Battery Indication: when battery voltage drops below operating voltage. Auto Power Off: Approx. 30 minutes after no function change.