1、Partially sealed electronic device designed for supporting electric generators, satisfy your needs. 2、Realize automatic adjustment of generator output voltage by controlling the excitation current of the generator exciter. 3、With high voltage stability, easy to use, automatic adjustment, convenient to operate. 4、Made of high‑quality material, sturdy and durable, can have a long service time. 5、Small in size and light in weight, convenient to carry and use at any time, very convenient and practical. Item Type: Voltage Regulator Module Part Number: 06018-20660 Product Model: AN-5-203 Applicable Models: TLG-18SPY, DCA-13ESK, 15ESK, 25SPK, 25ESK, 25ESI, 25SPI Auxiliary Winding Input: AC 55V-220V; Maximum Excitation Voltage Input: 120V/5ADC/10S Main Winding Voltage Input: 400VAC, 50HZ/60HZ Low Frequency Protection 50/60HZ adjustable; Generator Field Resistance ≥50; Steady-State Voltage Adjustment Rate ≤0.5%; Voltage Adjustment Range ≥15%; The Lowest Residual Excitation Voltage ≥5V/30Hz; When the external potentiometer is 1KΩ/1W, the voltage is fine-tuned by 12%; when the external potentiometer is not used, the connecting piece is short-circuited. 1 x Voltage Regulator Module 1 x Potentiometer 1 x Knob Cap