Convo inverter, inverter power a wide range of three-phase 380V 0.75-350kW control features comprehensive, built-in PID, timer counter, wobble, 16-speed operation, smart foolproof Road programmable digital input, 3-way exclusive digital input 3 analog inputs, 2 analog outputs constant pressure water supply cost-saving rate (25% -60%), a high rate of return (fan and water pump life expectancy by 20%) G / P-One, Selection flexible LCD & LED Chinese LCD and digital dual display panel parameter copy instantaneous power failure restart, power down from the memory function, do not need to repeat the parameter to set the fan can be removed for easy maintenance of clean protection to improve the (lack of phase, short circuit, overcurrent, overvoltage, undervoltage, overload, overheating etc.) board reinforced coating, dust-proof anti-corrosion