0.1~30000Hz Schumann Wave Generator Pure Sine Frequency Modulation Resonance Ultra-Low Frequency Pulse Signal Generator Product features: 1. Using high-quality materials, the product has good frequency stability; 2. This product not only outputs 7.83Hz Schumann waves, but also incorporates programmable frequency modulation technology to adjust the frequency within the range of 0.1Hz~30KHz; 3. There are two specifications to choose from according to your needs. The green version only has sine wave output, while the black version supports multiple waveforms including sine wave, square wave, and inverted square wave, which can be selected according to your needs; 4. Digital circuit crystal oscillator frequency reference, more stable and stronger anti-interference; 5. The power interface adopts DC5.5 * 2.1 or Micro USB interface, which is easy to use. The USB end can be plugged into a power bank, USB charging head or other USB powered devices to work. Product Description: Shumanbo itself does not directly act on sound or video products to improve sound quality, but rather acts on the spatial environment to relax the body and mind, enhance the body's perception of sound and images, improve the efficiency of human health work, and relieve psychological pressure. This product can not only output 7.83Hz Schumann waves, but also adjust the frequency within the range of 0.1Hz to 30KHz. The digital circuit crystal oscillator frequency reference is more stable and has stronger anti-interference ability. Product parameters: Black standard version: Antenna waveform: sine wave Interface waveform: sine wave+square wave+inverted square wave (the bottom left corner is the output interface, and the waveform is output simultaneously) Power supply interface: DC5.5 * 2.1 Supply voltage: 5V Rated power consumption: