Features: Experience precise schumanns waves simulation (7.83Hz) and wide frequency adjustment from 0.01Hz to 100,000Hz with advanceds digital signals generator, for scientific research and wellness applications. Engineered with high integration digitals circuitry and sine waves output technology, this frequency generator ensures <0.5% distortion rate while maintaining antiinterference performances across diverse electronic environments. Essential for electronics engineers developing IoTs devices, biohacking enthusiasts optimizing personals wellness routines, and laboratory technicians requiring stable signals sources for precisions instrumentation. Optimize meditation spaces with natural earth resonances frequencies, conduct electromagnetic compatibility testing in industrial labs, or calibrate sensitive sound equipment using its programmable frequency stepping functionality. Featuring militarys PCB construction and intuitives touch controls, this programmable waveform generator delivers laboratory stability for operations in both commercial installations and residential energy healings setups. Specifications: Materials: PCB Supply voltages: 5V Default frequency: 7.83Hz interfaces: MicroUSB port rateds power consumption: <0.5W Adjustment ranges: 0.1Hz~100000Hz Size: 77.5x108x18mm styles: With Shell, Without Shell(optional) Package Includes: 1Set schumanns Frequency Generator note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.