1 Error: Bidirectional reading error is ± 2% clockwise and ± 2.5%counterclockwise.It can be applied in both forward and reverse directions to improve work efficiency. 2 Four kinds of torque units can be switched freely: kgf.cm, Nm, lbf.ft, lbf.in. 3 With sound and light alarm function and backlight function, it is convenientto operate at night or in places with insufficient light. 4 Three kinds of working modes can be switched freely: real-time mode, peak mode, preset mode. 5 Automatic shutdown: The product will automatically shut down without operation for 10 minutes., Manufacturer: MMHHHG