Feature: 1. For Relaxation: Schumann wave generator, which acts on the spatial environment, relaxes the body and mind, and improves the perception of sound and images. 2. Adjustable: Schumann wave pulse generator has adjustable frequency range, adjustable range of 0.1Hz‑30000Hz, to meet your needs. 3. Anti Interference: 7.83Hz Schumann wave generator, the use of digital circuit crystal oscillator frequency reference, more stable and anti interference. 4. Antenna And Interface Waveforms: Schumann wave pulse generator uses a perfect combination of antenna waveforms and interface waveforms, providing a variety of options. 5. Energy Saving: Ultralow frequency pulse generator adopts 5V power supply voltage, low power consumption, energy saving and environmental protection, can be used for a long time. Specification: Item Type: Schumann Wave Generator Material: PCB Antenna Waveform: Sine Wave Interface Waveform: Sine Wave, Square Wave, Inverted Square Wave (The lower left corner is the output interface, waveforms are output simultaneously) Power Supply Voltage: 5V Rated Power Consumption: