Frequency Machine Adjustable Sine Wave Generator for Relaxation Sleep High Precision Features: Ultra-Wide Frequency Range: Capable of generating precise sine-wave signals from an ultra-low 0.1Hz up to 100,000Hz (100kHz), offering unparalleled versatility for electronics testing, laboratory research, and frequency calibration tasks. High-Precision Frequency Control: Features fine-tuned adjustment capabilities, allowing you to lock onto exact-frequencies with high stability. Ideal for resonance experiments, circuit debugging, and sound frequency analysis. Pure Sine-Wave Output: Delivers a clean, low-distortion sine waves signal, essential for sensitive equipment testing and ensuring accurate-results in resonance and audio frequency applications. Compact & Portable Design: Designed for convenience without sacrificing performance. The compact form factor makes it an ideal tool for field engineers, students, and hobbyists who need a reliable signal source in a small workspaces. User-Friendly Interface: Equipped with intuitive controls-such as digital displays or fine-adjustment dials-to make frequency selection quick, repeatable, and accu-rate. Notice: Actual color may be slightly different from the image due to different light effect Please allow 1-3cm deviation due to manual measurement Operating Voltage: DC 5V (DC 4-15V) Operating Current: 9-14mA Power Interface: Type-C (Supports Type-C to Type-C power supply) Default Frequency: 7.83Hz Adjustable Range: 0.01Hz~100000Hz Pure Sine Waves Signal Voltage Amplitude: 3VFeatures a 3.5M audio output interface Package List:1 Set 0.1Hz to 100000Hz Adjustable Sine-Wave Resonance Generator