1. High frequency stable output: 7.83Hz Schumann frequency output ensures signal stability. 2. Four modes with one-button switching: Supports standby mode, high-power transmission mode, low-power transmission mode, and illumination mode, easily switched via buttons. 3. LED frequency indicator: The LED light flashes with frequency, visually displaying the working status for easy observation. 4. High integration design: Digital circuit technology replaces complex analog circuits to improve anti-interference ability and stability. 5. Portability and ease of use: Designed to be portable, easy to operate, suitable for home, office, or travel scenarios. The product prototype is a wireless power transmission experimental board, using STC main control microcontroller, 7.83Hz Schumann frequency output, equipped with LED flashing with frequency, and 4 mode buttons that can be switched! This product is just a circuit board, without the cost of plastic board shell packaging box, so the cost-effectiveness is very high. Most of the products on the market are classic Schumann wave generators. The circuit prototype is derived from a NE555 Schumann resonance experimental board, with a large number of analog circuits on the periphery. It is not only complex and has poor anti-interference ability, but also easily affected by its own signal crosstalk; Parameter: Power supply interface: DC5.5*2.1 Supply voltage: 5V Rated power consumption:< 1W Frequency: 7.83Hz usage method: Take out the USB cable provided with the product, connect the circular end to the circuit board, and plug the USB end into a power bank, USB charging head, or other USB powered device to start working; The button can switch between multiple working modes: standby mode, high-power transmission mode, low-power transmission mode, and lighting mode. Color: Black & Gold Material: plastic Package Contents: 1X signal generator module 1X power cord Only the above package content, other products are not included. Note: