3600 RPM Light Impact Vibrator ideal for small hoppers with 300-700 lbs of material in sloped section. Very low noise level, intermittent duty, adjustable force output, dust tight. In line on/off toggle switch with motor overload protection in NEMA 4 enclosure and 8' cord between control box to 3 prong grounded plug. 4' of cord between vibrator and enclosure. Optional on/off timer available mounted in control enclosure.