Built in function switch Applied for water supply by liquid level control of pressure control Applied for drainage by liquid level control Computer main board and module for industrial & civil pump Over current (over load) protection Under voltage protection Over voltage protection Pump motor stalled protection Push button calibration Auto /Manual switch Open phase protection Dry running protection without installing float switch or liquid probe in the well Prompt for uncompleted parameter calibrating Digital voltmeter & Ampere meter real-time dispaly Pump accumulative running time displaying Pump last five fault record displaying Main specifications: Rated input voltage: AC380V /Three phase Rated frequency: 50Hz / 60Hz Rated output power of pump motor: 0.75-4KW(1HP-5.5HP) / 5.5-7.5KW(7.5HP-10HP)