Feature: 1. brand new and high quality 2. Made of high‑quality materials, durable. 3. Decline adjustment: the minimum position is 15Hz±6Hz / Amps load current change. The maximum position is 400Hz±75Hz / load current change per ampere. 4. The velocity controller is a closed‑loop control of the entire electronic design. When connected to a match, its instantaneous load changes rapidly and is accurately controlled according to the engine velocity, and it can realize the e‑velocity magnetic sensor signal. There are many types of engines. 5. High reliability design, the engine can withstand the surrounding environment within the range of electromagnetic interference. Specification: Colour: as shown Speed range: 1KHz-7.5KHz Thermal stability: Maximum ±1% Idle speed adjustment: 160±20Hz~95% of rated speed External speed adjustment: ±200Hz (external 1KΩ) AUX. Input sensitivity: 148Hz / 1V, ±10Hz, impedance 1MΩSTART FUEL. Adjustment: 160±20Hz~70% of rated speed RAMP. Time adjustment: 1.5~20 seconds 10V Output current: Maximum 20mA environment Operating temperature range: -40degree Celsius~85degree Celsius Working humidity range: up to 95% Storage temperature: -55degree Celsius~90degree Celsius Impact: 20-100HZ 500mm/sec Voltage: 12V and 24V DC battery system Grounding polarity: negative Power consumption: 50mA Actuator continuous current: minimum 2.5A; maximum 10A Speed sensor signal: 0.5~120 RMS. Package List: 1*Velocity controller 1*Velocity sensor 1*Brake 17*Accessories 1*Manual Note: Avoid overheating. Engine speed control components. Please refer to product publications when installing or servicing.