Features 1、Fully Electronic Closed Loop: The speed control board adopts a fully electronic closed loop design, which can control a variety of engines. 2、Quick Response: The speed controller can quickly and accurately respond to instantaneous changes, prevent reverse battery voltage and instantaneous pulse voltage. 3、Pre Adjustment: The engine governor is easy to install and can be pre adjusted to adjust the speed to work at idle speed. 4、Strong Anti Interference: The speed controller has high reliability and can withstand various electromagnetic interference around the engine. 5、Aluminum Alloy Shell: Adopt premium aluminum alloy housing, which is lightweight, has high strength, sturdy and not easy to damage. Specification Item Type: Diesel Generator Speed Controller Material: Aluminum Alloy Model: ESD5550E Speed Stability: ±0.25% Speed Range: 1KHz-7.5KHz Thermal Stability: Maximum ±1% IDLE Regulation: 160±20Hz 95% of rated speed DROOP Regulation: Minimum Position: 15Hz±6Hz/load current change per amp Maximum Position: 400Hz±75Hz/load current change per amp External Speed Adjustment: ±200Hz (external 1KΩ) AUX Input Sensitivity: 148Hz/1V ±10Hz Impedance: 1MΩ START FUEL Adjustment: 160±20Hz 70% of rated speed RAMP Time Adjustment: 1.5-20S 10V Output Current: Maximum 20mA Package List 1 x Diesel Generator Speed Controller 1 x Manual