Features Smooth Start Control: Features a gradual start process that enhances user experience and prevents sudden equipment jolts for safer Versatile Functionality: Offers fuel control along with idle and speed ramp functions, making it ideal for various applications and improving efficiency High Performance Assurance: Built to strict standards, ensuring stable and durability for reliable performance in demanding environments Quality You Can T: Undergoes rigorous inspections before shipping, allowing for confident usage and peace of mind for all customers Enhanced Durability Design: Constructed with superior materials to withstand harsh conditions, making it a long-lasting solution for low voltage equipment Features: 1、Speed regulator is added smooth and slow start process control, which is easy to use. 2、With parallel machine, idle machine and speed ramp, speed governor can also start fuel control function. 3、Stable and speed controller is entitled with high performance according to strict rule. 4、After many inspections before leaving the factory, speed controller 's quality is guaranteed, you can use it with confidence. 5、Generator accessory is built to strict quality control standards, improved for more durability. Specification: Item Type: Speed controller Power Supply Voltage: 12V and 24V DC battery system Grounding Polarity: Negative Operating Temperature Range: -45 ℃ ~ 85 ℃ Operating Humidity Range: Maximum 95% Storage Temperature: -55 ℃ ~ 90 ℃ Vibration: 20-100 HZ 500mm / esc Technical Specification: Speed Stability: Better than ± 0.25% Speed Range: 1KHz ~ 7.5KHz Thermal Stability: Maximum ± 1% IDLE Adjustment: 160 ± 20Hz ~ 95% of rated speed START FUEL Adjustment: 160 ± 20Hz ~ 70% of rated speed RAMP Time: 1.5 ~ 20Sec 10V Output Current: Maximum 20mA Package List: 1 x Speed Controller 1 x User Manual Package List 1 x Speed Controller 1 x User Manual