Features: Short-circuit, overload, over-current and thermally protected Full RPM range linear sound synthesis Advanced NDS/DTS technology Intelligent state tracking compensation Simulates the sound of engine, starting, braking, blow off valve, red line fuel cut and gear shifting More sounds available from RC/Plus APP USB updatability Specifications: Supply voltage range: 5 Volts - 26 Volts Speaker Impedance: 4 Ohms Output power under 4 Ohms: 20W/3S (12V) Number of channels: One channel 30W max Part number: SI-30S1230C Output is short-circuit, Overload and Thermally Protected For: Miscellaneous Color: Black Can Download and use other sound effect with RC/PLUS app Can Upload Custom Engine Voice and other sound effect Light weight and compact size, easy to install Real reproduction of engine sound Use advanced DNS / DCR algorithm to reproduces real engine sound Support AUX channel Intelligent state tracking compensation, similar to the real vehicle, aircraft, the movement of sound Through the design of the high-powered speakers, speakers and custom make sure small premise has the very good sound field Support R/C PLUS APP For: Uploading voice, the firmware upgrade Specification: Size: 80 mm X 46 mm X 29 MM Includes: ESS-ONE Plus 2017 Version Sound Module (1 pc) Quick Guide (1 pc) Double-sided adhesive (2 pcs) S-link (1 pc) Y Line (1 pc) Manual (1 pc) Software for programming Supports - Sense Innovations