diymore | Adjustable Schumann Wave Signal Generator 0.01-999.99Hz Dual Coil Design 4-Channel Audio Output for Meditation Training

Features:1. Supports wide frequency adjustment from 0.01 to 999.99 Hz, meeting various needs.2. Dual coil electromagnetic emission design, automatic frequency reset upon power failure, more stable and reliable operation.3. Adopting 4-channel independent AUX audio output, the four channel synchronized pure signal does not interfere.4. OLED real-time display of frequency/waveform/battery life, with long battery life.5. Suitable for health scenarios such as meditation guidance and concentration training.Product IntroductionThis product is an optimized Schumann wave signal generator. Its feature is that there are coils on both sides for electromagnetic wave transmission, which can reset the frequency even after a power outage. It has an OLED display screen and fewer input buttons. This cost savings translate into four audio output channels, as well as additional overcurrent and overvoltage protection, shorter frequency output range, and higher frequency accuracy. This device not only outputs 7.83Hz Schumann waves, but also can adjust the frequency between 0.1Hz and 999.9Hz. The built-in high-speed DAC allows switching between pure sine wave and square wave signals. Select output mode: PEMF (default): If no audio is connected, the device will emit a pulsed electromagnetic field (PEMF) through a Schumann wave coil. The effective range is about 1.5 meters. Audio output: Use an auxiliary cable to connect headphones or speakers to the 3.5mm audio jack. The frequency will be output as sound and can be heard both inside and outside the room, depending on the range of your audio device.Parameters:Color options: White/BlackWorking voltage: DC 5VWorking current: 500mAPower interface: Type-C (supports Type-C to Type-C power conversion)Adjustment range: 0.01Hz~999.9 Pure sine wave and square waveSignal voltage amplitude: 3VFour 3.5mm audio output ports (4 output channels)Transparent acrylic shellSize: 115mm * 85mm * 18mmBuilt in: 2000mA lithium-ion batteryCharging time: 2-3 hoursBattery usage duration: 6-10 days (testing duration, actual duration subject to actual use)Package Include:Schumann resonance frequency generator x 1USB charging cable x 1 (color random)3.5mm AUX audio cable x 1 (color random)Instructions for Use:For better performance, please connect one to four external antennas (ANTSA01/ANTSB02/ANTSC03) to the audio output.Q1: How to adjust the frequency?A1: Press the "+" or "-" button to increase or decrease the frequency. Long press to accelerate adjustment, release to save frequency.Q2: How to switch between "sine wave" and "square wave"?Q2: Simply press the button to switch between sine wave and square wave.Q3: How to turn on and off the power?A3: Press the "ON" button to turn on the power, and press the "OFF" button to turn off the power.Notes:Due to factors such as lighting and screen color differences during photography, the actual color may differ slightly from the image;There is a reasonable tolerance of ± 1-3 cm for size measurement.This product only includes the above-mentioned accessories, and other display items are not included.