Feature: 1. MAIN APPLICATION: This AVR board is applicable to the generator and used to stabilize the output voltage of the generator. 2. COMPACT DESIGN: The AVR board is small in size and light in weight, sturdy and durable for long term use. 3. SAFE USE: The AVR board possesses under frequency protection, over excitation protection and voltage delay function, electromagnetic interference suppression. 4. IDEAL REPLACEMENT: This AVR board is an ideal replacement for the old and damaged parts for better generator performance. 5. EASY TO INSTALL: Comes with a small size and lightweight as well, you can easily complete the installation and put the board into use. Specification: Item Type: Generator Voltage Regulator Material: Metal, PC Inductive Input Voltage: 170-520VAC 1 phase 2 wire dial switch optional Frequency: 50, 60Hz DIP switch optional Power Input Voltage: 100-300VAC, 1 phase, 2 lines Maximum Output Voltage: 63VDC at 220VAC input Current: Continuous 5A, intermittent 7A, lasting for 10 seconds. Resistance: 15 ohms minimum, 100 ohms maximum Voltage Regulation: <± 0.5% (4% engine regulation) Accumulated Residual Voltage at AVR Terminal: Greater than 5VAC Overexcitation Protection 78 ± 5VDC at 220VAC, 5 seconds. External voltage adjustment 7% with 1K ohm 1W trimmer Unit Power Consumption: 8 watts maximum Soft Start Ramp Time: 3 seconds EMI suppression internal electromagnetic interference filtering AVR thermal drift per 0.03% change in ambient temperature Underfrequency protection (Factory setting) The preset inflection point of 60Hz system is 55Hz The 50Hz system presets the inflection point to 45Hz Ambient Working Temperature: - 40 to 70℃ Storage Temperature: - 40 to 85℃ Relative Humidity: 95% maximum Vibration: 3G at 100-2KHz AVR Control Function VOLTS: Voltage adjustment STAB: Stability adjustment U/F: Set U/F inflection point (U/F: underfrequency protection). Package List: 1 x Generator Voltage Regulator Note: 1. Light reflection and different displays may cause the color of the items in the picture to be slightly different from the real object.2. Please allow 1 to 2in error due to manual measurement. Thanks for your understanding.