tactile and acoustic trigger signalmount for interchangeable insert toolsQuickRelease safety lockfast setting using convenient keypadautomatic compensation to achieve correct tightening torque even if a changed extension is enteredoverload protection by means of acoustic and visual signalsautomatic keypad lock prevents inadvertent changesdisplay also works for anticlockwise torqueunits of measurement: N·m, ft·lb, in·lbdifferent tolerance limits can be set for each jointvisual red and green signals in the display confirm the status of the jointadditional security for presets (function mode, trigger or preset value, unit of measurement, tolerance, save, deviating extension) using PIN codeup to 7.500 measurements can be storedUSB interfaceautomatic notification of the next calibration datecalibration using perfectControl® calibrating unit No 7794 or calibration system No 7791two-component handle with ergonomically designed green softer layers (resistant to oils, grease, fuels, brake fluids and skydrol)certificate in accordance with DIN EN ISO 6789‑2:2017in sturdy plastic box (sizes 40-100 in steel box)patentsupplied with two 1.5 V AA batteries. AA/LR6, 1.2 V rechargeable cells may also be useddisplay deviation value ± 2%, ± 1 digit