Music for Tesla Coil Artificial Lightning for Tesla Music Class-E for Tesla Wireless Transmission Bluetooth-compatible for Desktop Toy Model Features: 1. Practical Tool: This musical for Tesla features wireless transmission and a speaker that ignites gas tubes and various bubbles. It is the perfect teaching tool to stimulate students' interest in science and makes a great gift. 2. Wide Usage: This is a smart device for wireless transmission experiments. It can be used to create high voltage lightning and perform various scientific experiments such as wireless power transmission, wireless lighting and insulator withstand voltage testing. Teachers use it to demonstrate to students the principles of enhancement and high frequency skin effects, etc. 3. Circuit-protected: This musical for Tesla has a circuit-protected design that will not damage the input device. 4. Bluetooth-compatible: Bluetooth connection for cell phones is convenient. 5. Unique Design: With a new design circuit board, the circuit design is reasonable. Specifications: Playable music format: Only square wave music can be played Audio input: Bluetooth connection with cell phone (cell phone search Bluetooth device M18) Arc length: about 30-70mm / 1.2-2.8" (actually may be shorter or longer) Power: 0-100W Temperature control function Material: metal Product size: about 65 x 95mm/2.6 x 3.7" (diameter x height) Temperature control rules: when the heat sink temperature is higher than 65 degrees will be disconnected from the drive power supply, the performance of the lower red led lights off, then please dial the switch to the middle of the block and rest coil waiting for the temperature to drop, the red light can be normal work (reset temperature 42-45 degrees Celsius, please use in an environment not higher than this temperature) Cautions. 1. Because the frequency is too high, the heat of the MOSFET will be relatively large. Please pay attention to the temperature of the heat sink when using, so as to avoid high temperature (mainly music mode) damage components. 2. During use, please do not place explosive items within 5m / 16.4ft. 3. Due to the serious interference with the metal. Please do not approach the coils of electronic devices such as cell phones and computers to avoid damage. 4. Because the diameter of the secondary coil is very small, try not to bump to avoid damage to the secondary coil winding 5. Please do not modify the equipment without permission to avoid accidents. 6. Do not use illegally. 7. Highly recommended electronic knowledge. 8. For viewing only, if you do not know how to use, please do not open it yourself. Warning. 1. Keep away from those with implanted pacemakers and other life support electronics (10m/32.8ft range)! Since the solid-state for Tesla coil operates in a state of strong magnetic and electric fields, it induces electrical currents in surrounding metal objects, including wires, cables and nearby electronic devices, and generates strong electromagnetic radiation. Therefore, if there are implanted or unimplanted electronic device carriers around, energization experiments may cause these devices to malfunction and cause life-threatening effects! 2. The voltage of the solid-state for Tesla coil control and power output components is higher than the safe voltage and direct contact with the limbs is prohibited during operation and commissioning. 3. There is a large capacity energy storage device in the solid-state for Tesla coil, which still has a lethal voltage after power failure. When commissioning, the charge in the energy storage device should be released first. After installing the discharging element, wait for a few minutes before commissioning. Manual short-circuiting of the discharge is prohibited, otherwise the energy storage device will be damaged. 4. Solid-state for Tesla coils produce a large amount of ozone during the discharge process, so make sure the experimental site is well ventilated. If you do not follow the regulations or engage in illegal activities, all consequences will be borne by you! Notes: 1. The package does not include the power supply, need to provide their own 2. The current version is a dual power supply version, two power supplies are required. 3. Power supply one: (55 * 21mm plug): 36v (2a and above) --- 48V (2a and above) 4. Power supply two: (3.5 * 13mm plug): 12V (2a and above) 5. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 6. Please allow 1-2cm measuring deviation due to manual measurement. Packages: 1 xMusic for Tesla Coil