Features 1、Safe to Use: This voltage regulation board has overvoltage protection function and low speed protection function, use it with confidence! 2、Fine Workmanship: This voltage regulation board is well made with adjustable voltage range, high voltage stability, single phase dedicated, and 50HZ to 60HZ adjustable. 3、ABS Material: Made from premium ABS material, this voltage regulation board is not likely to deform and also has excellent durability for long working hours. 4、Easy Operation: This voltage regulator has a simple setting method, which is reliable and convenient to use. 5、Ideal Replacement: This voltage regulator can be easily installed, ideal replacement for the old and damaged parts. Specification Item Type: Voltage Regulator Model: AS440 Material: ABS Input: Frequency: 50 to 60Hz Number of Phases: Single Phase Output: Current: 4A Continuously, 7.5A Maximum Intermittently (10 Seconds) Surroundings: Working Temperature: -40 to +70℃ Maximum Humidity: Up to 95% Storage Temperature: -55 to +80℃ Package List 1 x Voltage Regulator 1 x Manual