Feature: 1. The electronic speed governor is mainly used for generators to solve the problem of black smoke caused by rapid refueling during the start‑up process. 2. Increase the smooth and slow start process control, high safety factor, to ensure the good operation of the machine. 3. Widely used in new generators to control the speed of generator sets above 200kW. 4. The four corners of the generator governor have openings, which are fixed with screws for easy installation and removal. 5. Made of high-quality materials, good overall performance, fast and accurate response. Specification: Item Type: Engine Speed Regulator Material: Iron Model: ESD5500e Power Supply Voltage: DC 12V/24V (universal) Operating Temperature Range: -40℃-85℃ Size(L x W x H): Approx.146 x 140 x 26mm / 5.7 x 5.5 x 1in Mounting Hole Diameter: Approx. 6.6mm / 0.3in Applicable Models: Suitable for Cummins/Volvo Fukang/GAC generator set. Package List: 1 x Engine Speed Regulator1 x User Manual Note: 1. The speed controller is sturdy and durable enough to be installed in the control box or fixed on the peripheral parts of other control equipment on the engine. If water, moisture or condensed water enters into contact with the controller, it must be installed vertically so that the liquid can flow away from the speed controller;2. Prevent overheating: Drive at overspeed, not controlled by the speed control system to protect personnel and equipment from damage when the engine fails. Don't rely entirely on the electronic actuator of the speed control system for overspeed protection. You must use another set of parking drive, such as a fuel solenoid valve.