Item Type: Automatic Voltage Regulator Board_x000D_Input Power: 95V132VAC or 190-264V 50/60Hz_x000D_Maximum Output: 6A, 90VDC (when the input power is 207VAC)_x000D_Voltage Adjustment Rate: 1%_x000D_Generator Field Resistance: 12 ohm minimum_x000D_External Potentiometer: 2K1/2W potentiometer plus or minus 8%_x000D_Voltage Establishment (initial): When the residual magnetic voltage is greater than 5V/25Hz, the voltage will be automatically established_x000D_Low Frequency Protection: Built-in frequency protection circuit that reduces output voltage when engine revolutions drops_x000D_Operating Temperature: -4060 1Good?quality capacitor possess good parameter consistency and high reliability 2Come with high accuracy, wide range of working temperature, small drift and good stability 3The potentiometer adjust smoothly and not easily damaged, very practical 4Made of good?quality material, have strong corrosion resistance and stable structure 5Automatic generator voltage regulator module is durable and light weight1 x Automatic Voltage Regulator Board 1x User Manual