| Brand | Unbranded |
|---|---|
| Marke | Markenlos |
| Country of Origin | China |
Check the listing for details. DC 5V 0.01-9999HZ Adjustable Frequency Schumann Wave Sine Wave signal Generator. Condition: New, Made in China. Listed at 15.17 USD. It effectively regulates the “field.”. Frequency: Default 7.83 Hz upon startup; adjustable from 0.01 to 9999 Hz (digital display). The frequency oscilloscope can detect frequencies. The device features a 3.5mm external audio jack for connecting headphones or speakers.