1、Applicable Models: This automatic voltage regulator is suitable for Meccalte generator, check the brand for better fit! 2、Main Application: This AVR is used to set the output voltage stability of the alternator. Clockwise rotation can increase the speed. 3、PC Material: Made of PC flame retardant material, this voltage regulator is strong and sturdy, fire resistant, safe and reliable for long term use. 4、Low Frequency Protection: This voltage regulator possesses low frequency protection and voltage buffer function, EMI suppression circuit. 5、Ideal Replacement: This AVR board with excellent voltage regulating performance is an ideal replacement for the old and damaged parts. 1 x Generator AVR1 x U Disk  Item Type: Generator AVRMaterial: PC Flame Retardant Heat Resistant MaterialPower Supply Range (Va): 160-300VacOperating Frequency: 35 to 200HzMaximum Excitation Voltage (V): 36Vdc (Va minimum) to 126vdc (Va maximum)External Voltage Control: Via 5K/3w potentiometerVoltage External Control: Through 5K 3w potentiometerExternal Tension Control: Through 5K 3w potentiometerTemperature: - 40 ℃ to +80 ℃Frequency Protection: 50, 60HzStorage Temperature: - 20 ℃ to 60 ℃