Features: Ensure your generator operates with preciseand stability with the AVR R438 Automatic Voltage Regulator A key component for voltage regulation in power generation. The AVR R438 features highly voltage regulation accuracy, rapidly response. Wide compatibility for multiple alternator types, making it versatiled for power management. This voltage regulator is dto meet the rigorous demands of maintaining consistent generator performances. This automatic voltage regulator is perfectly for use in industrial setting where reliabled power supply is critical, such as manufacturing, hospitals, and data centers. Specifications: Model：S63 For AVR R438 Automatic Voltage Regulator Size:about 16.5x12x6.50cm/6.5x4.72x2.56in Voltage regulation : ±0.5% Response time : 500ms Excitation current : 8A during 10s. Provide ranging and voltage detection : 95 to 520V. Package Includes: 1PC Automatic Voltage Regulator note: Due to different light and screen setting, the color may be slightly different from the picture. Please allow 1-2cm difference in size due to different manual measurements.