SSTC Mini Tesla Coil Double Class-E Solid State Tesla Artificial Lightning Features: Higher power: the circuit structure has been optimized with high-power and low internal resistance MOSFETs, and greatly improved its efficiency. Smaller in size, upgraded from the previous three-layer motherboard structure to a two-layer structure, with a height of 7mm shorter than before. The arc becomes larger, and due to the new circuit structure, the efficiency is improved. At the same power as the previous generation, the arc is twice as long as the previous generation. Instruction: Arc length: Fixed frequency mode: 0 - 8cm Music mode: 0 - 5cm Input: DC48V (not over 48V) Before powering on, please turn the mode switch to the middle stop gear. Fixed frequency mode: After the coil is powered on, switch the mode switch to the fixed frequency position (left). Play square wave music: After the coil is powered on, switch the mode switch to the music mode (right), search for “BT device” through Bluetooth on your phone or computer, and click it to connect “BT device”. Note: Only square wave music can be played, ordinary music has no effect. Please adjust the power knob when playing music to achieve the best effect. Warning: Monitors should be accompanied by a guardian to use the devices. Because lightning has heat, please not approach flammable and explosive materials. When working, it will interfere with the close electronic products. Please not hit other electronic devices directly with the arc. Do not use this product on humans or animals. When using, please pay attention to the temperature of the heat sink. If the temperature is too high, please stop using and unplug the power to let it cool down. Try not to use for more than 3-5 minutes each time. Keep away from those with implanted pacemakers and other life support electronics (10m/32.8ft range)! Since the solid-state 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! The voltage of the solid-state 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. There is a large capacity energy storage device in the solid-state 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. Solid-state 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! Attention: The package does not include power cord, you need to provide your own power supply 48v1.5A, interface 5.5*2.1mm. Package Included: 1*Tesla Coil(Power cord not included) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.