Features: ~IC control circuit and automatic frequency tracking system. ~Accurate Digital switch provided, 1/100 scale adjustment. ~With permanent auto control indication of either abnormal overload or normal operated parameters conditiond. ~Prismatic colum ensuring accuracy of adjustment repeatability. ~Automatic horizontal level device and precised micro-switch. Provided horn and nest fitting accurately. Model High Power KWL4215 Output(w) 4200 Frequency(KHz) 15 Line Source 3P 220V 20A Control Auto Tracking Overload Protect Overload Indicating Lamp, Run off Air Cylinder 100 Ф x 100 Height Adjustment (from booster) 565mm(595-30) Dimension (mm) 920L x 900W x 1990~2240H Max. Weight (kg)/ column Ф 300kg/100Ф