Made of fine quality frequency converter has nice durability and long service life. It has fine performance and strong function. Human design keyboard with proper and clear digital display screen is easy to operate. Fine heat dissipation system can extend the service life. Drive board is electrostatic protections. Specifications: Name: Variable Inverter Model: AT1-2200S VER: A03 Source: 200V AC, HZ50/60 (single phase) Capacity: 4.0KVA1.5KW/2HP Output Current: 8A Application Range: universal Phase: Single Phase Adaptation Motor Power: 2.2KW Filter: built-in filter Control Method: V/F closed loop Output Voltage Regulation Mode: PWM control Rated Current: 12A Item Weight: 1137g / 2.51lb Package Weight: 1315g / 2.90lb Item Size: 195 x 130 x 110mm / 7.68 x 5.12 x 4.33in Package Size: 215 x 200 x 160mm / 8.45 x 7.87 x 6.30in Button: DISP: Switch monitoring parameters at monitoring state, at secondary menu, move data box to process editing position. PROG: Exit currentor present state, switch among each states, mainly used to switch monitoring state, exit to previous menu. FUNG/DATA: Enter menus step-by-step, save setting parameters. Up: Press or press and hold to add data or function code. Down: Press or press and hold to minus data or function code. RUN: S-tart. STOP/RESET: VFD stops running 2, restore to interface before error. Knob: Adjust rotational speed Package List: 1 x Variable Inverter 1 x Manual