1. The sensor measures and filters the electrical activity of muscles, outputting 0-V voltage for electromyogram (EMG) detection. 2. Designed for use with single-chip microcomputers, this compact muscle activity detector is optimized for microcontroller-based applications. 3. This muscle signal sensor detects electromyographic (EMG) signals to measure muscle activity, traditionally used in research settings. 4. Power supply voltage: minimum 3.5 V. 5. Note: This is a hobbyist-grade module, not a certified medical device; accuracy is not guaranteed. 6. Cable length: 94 cm. 7. Board dimensions: 2.5 cm × 2.5 cm. 8. Features a dedicated microprocessor design. 9. Equipped with a 3.5 mm connector. 10. Pins are compatible with standard motherboards. 11. EMG-based muscle activity measurement has historically been used in research; advances in compact, high-performance microcontrollers and integrated circuits now enable its use in various control applications. 12. The sensor outputs filtered and rectified muscle electrical activity in 0-V voltage range; output magnitude corresponds to muscle activity level. Easy integration with controllers. 13. Color: As shown. 14. Material: Plastic. 15. Package includes: - 1 × Muscle sensor board - 1 × Professional cable - 3 × Disposable surface electrode pads 16. Note: Lighting conditions and display variations may cause slight color differences between the image and the actual product. Measurement tolerance: ±1–3 cm.