Features: Protections methods: overcurrent, overvoltage and undervoltage, failure, overheating, shortcircuit, input and output phase loss, abnormal motor parameters adjustment. 8-segment programmables, multisegment speed Controlling, and multiple operating type to choose from. Multiple analogs inputs/outputs(0-5volts/0-10volts/4-20mA/0-20ma). Constant pressure water supplys and air pressure constant pressures control. Easy operate with optional torques/speed Controlling type. Infinitely speed regulation. Low frequency highly torques, energies saving. Come with standard RS485RTU type. Specifications: Materials: Plastic Size: about 24.5x16x17.50cm/9.64x6.30x6.89inch Model: AT3-5~11KW Filter: Builted in filter Rate voltages: Input 220V, output three-phase 380V Rate current: 0-12A Adapt motor power: 5.5-11KW Nature of power supply: voltages type Note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color. Package includes: 1x Variable Frequency Drive