Advanced Frequency Precision: Experience precise frequency adjustments ranging from 0.01Hz to 100,000Hz, ideal for various scientific and audio applications Versatile Voltage Compatibility: Operates efficiently within a DC 5V power range, ensuring compatibility with multiple power sources and setups Pure Sine Wave Output: Delivers high-fidelity sine wave outputs, perfect for audio experiments and improving sound quality in various environments Compact and Durable: Designed with robust materials, this generator ensures reliability and longevity, even in rigorous use cases Digital circuit crystal frequency reference, more stable and more resistant to interference Antenna waveform: sine wave Interface waveform: sine wave + square wave + inverted square wave Power supply voltage: 5V Power supply current: 10mA Rated power consumption:Less than 1W Default frequency: 7.83Hz Adjustment range: 0.1Hz~100000Hz Sine signal voltage amplitude: 3V Square wave signal voltage amplitude: 5V Colour:Green Material:PCB Package Contents: 1 x Schumann Wave generator 1 x Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.