12 or 24V DC systems(Transient and reverse voltage protected) The speed controller is a closed-loop control of the entire electronic design, it's instantaneous load changes quickly and with accuracy control in response to engine speed when connected to the match and the implementation of e-speed sensor signals can be Control of a wide range of engines It is designed to be highly reliable, the engine can withstand the surrounding area within the range of electromagnetic interference In design, installation, and simple pre adjustment, including auxiliary or multiple specialized machine inputs for transmission rate and adjustable idle, to avoid reverse voltage, transient voltage pulses, actuator short circuit faults, and power outages or speed sensor signals. Package Include:1x Engine Speed Governor Controller ESD5111, Manufacturer: findmall