Feature:Need not to make adjustment automatically, high precise It is not necessary to make any adjustment according to different patients.Two kinds of different frequency signal,Irrespective of dry or bleeding purulence in the root canal.Precise measurement results, although it's filled with NaCLO2, Physiological Saline, H2O2, Water, etc. Irrespective of kinds of teeth, size of root tip, thickness of root canal file.LCD display with exact visualization. Set Shining position of root tip arbitrarily, to as length sign during operation.Dapper root file holderRoot canal holder, contrary electrode can be sterilized by autoclave.Contact point of root canal file is made by high quality metal. Technical Data:Power voltage:DC7.5V(5*DC 1.5V AA Alkali dry cells)Power consumption: below 0.135VATest Voltage:below AC80mVTest electric current: below 10uADisplay: LCDDimensions: 105*105*115mmWeigh: 370g Packing list:Main unit 1pcProbe cord 1pcFile holders 3pcContrary electrodes 5pcScrewdriver 1pc