Feature 1 The product stop fluctuation of voltage, automatically maintaining generator output terminal voltage at a set value 2 Works for preventing generator from suffering damages of voltage fluctuation or over load 3 Automatic voltage regulator board is suitable for high levels of vibrations and harsh environments 4 The board of the regulator is made of flame retardant and high temperature resistant material, safe and durable 5 Allowing the user control the generator's output finely for the connection of a remote voltage trimmerItem Type: Automatic Voltage Regulator BoardModel: R450Detection Input: Voltage 95-480VACPower Input: Voltage 40~150VAC three-phaseMagnetic Field Output: Maximum 160 VDC when the voltage is 120VAC input, the maximum power supply is 10APressure Regulation Accuracy: <0.5%RMS (engine speed change within 4%)When a short circuit occurs, the excitation current will be reduced to less than 1A in 10 secondsF1 is connected to X1 road, F2 is connected to Z2 road. 10A; slow-250VF0-110V terminal = 95 to 140V0-220V terminal = 170 to 260V0-380V terminal = 340 to 528V Package List1 x Automatic Voltage Regulator Board1 x User ManualNoteRead the manual carefully, and wire correctly according to the wiring diagram