1,FULL PROTECTION: The voltage regulator board has built in low speed, over excitation, over voltage, and over current LAM functions to ensure safe operation. 2,ABS HOUSING: ABS has good insulating properties, is light and wear resistant, and the regulators made from it are durable. 3,AUTOMATIC REGULATION: This voltage regulator board can automatically adjust the voltage to ensure the stability of the voltage and make your generator work stably. 4,COMMON ACCESSORIES: This voltage regulator board is one of the common accessories for generators, it can regulate the voltage quickly and stably. 5,RELIABLE PERFORMANCE: The setting method of this voltage regulator board is simple, easy to use, and stable and reliable in performance. Item Type: Automatic Voltage Regulator Board Material: ABS Model: MX321 Power Input: 170-220VAC (PMG) Induction Detection: 190-264VAC Voltage: 120VDC (Maximum) Current: 3.7A (continuous), 6A within 10 seconds (instantaneous) Protection Function: Built in low speed, over excitation, over voltage, over current LAM Voltage Regulation Rate: 0.5% 1 x Automatic Voltage Regulator Board 1 x Instruction Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.