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Current Controlled Torque System suitable for screw fastening work Easy fastening setting by controller Lowvoltage brushless motor ESD (electrostatic discharge) protection structure For both handheld / automatic machines Nine speed settings available Automatic three step speed control function Two types of measuring methods (Time/Motor rotation signal) Seven color indication LED (At the tip of the screwdriver) Two external I/O signal connection ports (NPN PNP switchable, RS232C) Controller has built in counting function Preventing human errors Various settings can be configured via a PC (Pree setting software available on NITTO KOHKi website here) More infomation available on NITTO KOHKI website here)