Beginners are skilled workers in only 30 seconds.

· It can be easily set with a single button by direct teaching. Directly several to work clamping screw from the clamping start of the screw driver 
rotation pulse count of the motor to the seat (+ 10% of the maximum value, -10% of the minimum value becomes the set value) to automatically recognize 
that , Time and labor required to set up are greatly shortened. 
 

· By counting the number of rotation pulses of the motor, 
we highly accurately judge scratch defects such as mixing of different types of screws , screw lifting, cam out, pilot hole wear, screw graze and so on. 
 

· By the built-in screw counter, the remaining number is displayed in countdown every screw tightening.