Apex locator with patented technology that offers an accuracy rate of 97.5%.* User-friendly, its display screen is large and easy to read. First unit with the ability to work in wet canals—reading is not affected by presence or absence of blood, other discharges, or electrolytes. Action of meter in the display corresponds exactly to the tactile sensation of using a file. Other features include: slim, lightweight file holder, no zero-adjustment, automatic calibration, battery power indication, and automatic power-off function. OTR Module enables the unit to function as a low-speed handpiece and an apex locator. It snaps easily onto the back of the unit, and measures and prepares the canal with a unique 90° autotorque release-and-file advancement feature. OTR maintains excellent cutting efficiency with less stress on the file, reducing the possibility of breakage. It offers 3 speed settings of 100, 300, and 500 rpm and 3 programmable memory modes. In ‘‘normal’’ mode, 8 speed settings—from 150–800 rpm—and 11 torque settings are available. 1-year warranty.