Front panel Mains OnOff switch Fuse Coarse & Fine Vibration set pots, Special design for Inductive load like Vibrator coils, Totally smooth, Linear & Stable control, In-built Soft Start for jerkless vibration at starting. Isolated Control Voltage, Motor Overload Protection by easily replaceable Glass fuse, On board adjustable Min & Max vibration limits, 0 to 10V DC from PLC for Vibration control (optional).