Schumann Waves Resonance Generator 001Hz to 30000Hz Adjustable Sine Wave Resonance Generator 783Hz Ultra Low Frequency Highlight description: Versatile Application: Schumann Waves Generator offers sine, square and reverse square wave options. An acrylic dust cover is included to help protect the circuit board Adjustable Frequency: You can customise the frequency from 0.01 Hz to 30000 Hz for greater efficiency and personalisation Stable: The Schumann Waves Generator ensures a stable frequency output with a default value of 7.83 Hz, a sine wave voltage amplitude of 3 V and a square wave voltage amplitude of 5 V Compact and Portable: The Schumann Waves Generator has a compact size of 15x15 cm and is USB powered, making it easy to carry around at home or when travelling Promotes Relaxation: The Schumann Wave Generator emits sine waves to create a relaxing environment and promote a sense of overall happiness Specification Product name: Schumann Wave Generator Material: ABS Size: 15 x 15cm Adjustment range: 0.01Hz~30000Hz Voltage amplitude of sinusoidal signal: 3V Voltage amplitude of square wave signal: 5V Power connector: DC 5.5 x 2.1 Rated power consumption: