2x RC Car Engine Sound Simulated Module Simulator with Speaker for RC Vehicles Highlights Generic Brand 2x RC Car Engine Sound Simulated Module Simulator with Speaker for RC Vehicles Description: The engine sound simulation system uses advanced SGS and SFC technology, making the sounds more realistic. Supports AUX channel, can simulate a variety of auxiliary sounds. Can also simulate various types of alarm sounds and supports 4S Lipo. The system has up to 10 built-in engine sounds, 5 built-in alarm sounds, switch freely with different engines. Supports stop of exhaust valve sound; and the brake sound can be set freely on and off; Supports positive and negative throttle direction settings. Low voltage protection and automatic detection of battery type on the power supply and adjustable volume. Specification: Material: Plastic and electronic components Color: Black (As the picture shows) Overall size: Approx. 46x46x44mm / 1.81x1.81x1.73 inches. Output: Monaural Package includes: 2pcs RC Car Model Sound Simulator