frequency stability: 7.83Hz Schumanns Waving Signals Generator with programmable modulation technology adjustable from 0.001Hz to 200KHz. Sine wave output: its sine Waving antennas output and 7.83Hz setting make it a tool for exploring Schumann resonances. ABS construction and reference: built from ABS materials with a digital circuit crystal oscillator frequency reference for enhanced stability and strong antiinterference capabilities. Versatile use: designed for sleep enhancement environments or as part of advanced electronic projects, delivering reliable performance across settings. Key benefits: precise frequency control, wide modulation range, stable operation, robust anti interference performance, durable construction. Use scenarios: 1) In a sleep enhancement environment, use the 7.83Hz setting to support relaxation and ambient signaling. 2) As a stable signal source for electronics prototyping, testing, and calibration in research or hobby projects. 3) For demonstrations or experiments related to natural resonance phenomena and Schumann resonances.