Error: Bi-directional reading error is ±2% clockwise and 2.5% counterclockwise. It can be applied in both forward and reverse directions to improve work efficiency. Free switching of four torque units: kgf.cm, N.m, lbf.ft, lbf.ino With sound and light alarm function and backlight function, it is convenient to operate at night or in places with insufficient light. Three working modes can be freely switched: real-time mode, peak mode, preset mode. Automatic shutdown: the product does not automatically shutdown for 10 minutes, Manufacturer: SOYWIM