Feature: 1. Included Parts: Mini music coil module kit, equipped with capacitor, inductor, indicator light, LED light, audio cable and other accessories, convenient and practical. 2. With Audio Cable: With 3.5 audio input interface audio cable, which can connect mobile phone, MP3 and computer audio, etc., and supports playing music with clear sound. 3. Voltage and Power: 15‑24V DC input voltage and 15W power are used, when 24V is used, 5‑10mm arc length instrument is ideal and has a wide application range. 4. Multiple Functions: Can work uninterruptedly for a long time, and can also use LED to emit light, supports wireless play of power transmission, rotating arc, etc. 5. Easy Installation: The music coil and module kit is compact, easy to install and disassemble, and used for various electronic experiments and demonstrations. Specification: Item Type: Music Coil Kit Material: PCB Color: Black Power: 15W Audio Input: 3.5 interface, can connect mobile phone, MP3 and computer audio. Package List: 1 x Module1 x Coil2 x Capacitors2 x Inductors2 x Indicator Lights1 x LED Lamp2 x Power Interfaces2 x Radiators4 x Support Mounts6 x Screws1 x Audio Cable1 x Power Cord2 x Triodes