7.83Hz Schumann Wave Generator DC5V USB Ultra-low Frequency Sine Pulse Signal Generator 0.1Hz~30000Hz Adjustable Audio Resonator 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 2 specifications to choose from according to your needs, sine output;4. Digital circuit crystal oscillator frequency reference, more stable and stronger anti-interference;5. The power interface adopts Micro USB interface, which is easy to use. The USB end can be plugged into a power bank, USB charging head or other USB power supply device 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:Antenna waveform: sine waveInterface waveform: sine wavePower supply interface: Micro USBSupply voltage: 5VRated power consumption:< 1WDefault frequency: 7.83HzAdjustment range: 0.1Hz~30000HzSinusoidal signal voltage amplitude: 3VSquare wave signal voltage amplitude: 5VCircuit board size: approximately 15 * 10CMDimensions with shell: approximately 15.5 * 10.5 * 2.8CMChange frequency method:Simply enter the frequency and press the bottom left button to complete the settingFor example, press [7] [.] [8] [3], and then press [OK] to set it to 7.83Hz. The default power on output is 7.83Hz, with a setting range of 0.1-30KHzUsage method:Take out the USB cable that comes with the product, connect it to the circuit board, and plug the USB end into a power bank, USB charging head, or other USB powered device to start working. Producting List:1 * Schumann wave generator (optional with or without shell)1 * USB cable