Battery Powered Version Cordless Schumann Sine Wave Resonance Generator 7.83Hz Resonance Device Specifications: AntennaWaveform: Sinewave Interface waveform: Sinewave, squarewave, inverted squarewave Power: Battery operated Battery: 1000 mAh Signal voltage amplitude: 3V Rated power consumption: <1W Default frequency: 7.83Hz Adjustment range: 0.001Hz-200KHz SineSignal voltage amplitude: 3V SquareWave signal voltage amplitude: 5V Circuit board size: 150 * 150mm / 5.9 * 5.9in Package size: 160 x 160 x 30mm Package weight: 200g Package Includes: ?Schumann wave generator x1 USB cable x1 Touch pen x1 Pin cable x1 Pin cable purpose: Provides the oscilloscope with direct access to the generator’s Schumann-wave signal for waveform verification. How to use: Plug the 4-pin connector into the unit’s SIGNAL OUTPUT port, then clip the color-coded alligator leads to the scope’s probe tips (GND to ground, SIG to the input). Notes: 1. Screen-off (power-save): After 2 minutes of inactivity, the screen turns off, but the frequency continues to run. 2. Screen-on: Tap the power key once to wake the screen; the FREQ (Hz) display shows the current value and the red “=” icon indicates active output. 3. Power-up check: If the unit were off, a single press would do nothing; a 3-second long-press is required to start it from shutdown.