TRMS 2000 Counts Volt Meter Ohmmeter Digital 1.5v/9v/12v Battery Voltage Tester. The meter is a multi-function instrument with high measurement accuracy,fast response, and high afety level. Embedded with a special IC up to 2000 counts, this IC is composed of high-precision A/D converter with high-speed digital processor. It is with accurate measurement, high resolution, fast operation, complete software calibration, no change in long-term use in accuracy, which is suitable for professional engineers,maintenance engineers, teaching, etc.