Features Universal Type: This regulator is a universal type, suitable for various brushless generator sets with stable performance. Low Frequency Protection: Automatic voltage regulator AVR has low frequency protection and establishes protection circuit when generator speed drops. Versatile: This regulator board can be used for simple parallelization with external voltage regulation and voltage range selection. Compact Size: This automatic voltage stabilizer is small, lightweight, robust, easy to install and has a long service life. Common Accessories: This voltage regulator board is one of the common accessories for generators, the AVR board can regulate the voltage quickly and stably. Specification: Item Type: Universal AVR Board Material: ABS Induction Input Voltage: 220/400VAC, 1 phase 2 wires Power Input Voltage: 180-240VAC, 1 Phase 2 Wire Output Voltage: Maximum 90VDC at 240VAC input Current: 6A continuous, 12A intermittent (10s) Resistance: Minimum 10Ω Maximum 100Ω Voltage Accumulation: Residual voltage at AVR terminal > 5VAC External Voltage Adjustment ±7% (1KΩ 1watt trimmer) Unit Power Consumption: 8Watt maximum Under Frequency Protection 60Hz system will inflection point preset to 57Hz Package List:1 x Universal AVR Board  1 x Instruction Package List 1 x Universal AVR Board 1 x Instruction