Feature:1. Versatile Compatibility: Designed to fit a wide range of model scales, including for 1/28 1/24 1/18 RC crawlers, ensuring broad suitability and adaptability across different RC car models.2. Realistic Sound Effects: Features high simulation engine sound effects, adding an authentic auditory experience that makes your model car more dynamic and lifelike, enhancing overall realism and excitement.3. Premium Components: Built with premium electronic components, this engine sound simulator boasts a low failure rate, ensuring long lasting performance for an uninterrupted and enjoyable RC car experience.4. Enhanced Play Experience: Amplifies the fun and engagement of playing with RC cars, providing an immersive experience that captivates users and elevates the overall enjoyment of operating your model car.5. Effortless Installation: Designed for simple and convenient installation, allowing users to quickly and easily set up the RC car engine sound simulator, saving time and effort for immediate enjoyment.Specification:Item Type: RC Car Engine Sound SimulatorMaterial: Electronic ComponentsOutput Power: 1W 8 Ohm 5V, 0.6W 8 Ohm 3VSignal Input: Positive pulse 0.8ms to 2.0msSound Sampling Rate: 22.05 kHzMemory: 4M, approx. 20 seconds sound at 22.05 kHz.Package List:1 x RC Truck Sound ModuleNote:The power supply voltage for the sound module is up to 5V, must not exceed 5V, otherwise the built in amplifier and microcontroller will be burned. If the BEC of the ESC is 6V, it is recommended to connect two 2A rectifier diodes in series from the receiver, this will provide a voltage drop of 1.2-1.4V to power the sound module.