You can customize the button to achieve mouse, keyboard, string, and multimedia functions. USB + 2.4G + BT4.0 three-mode connection allows easy switching according to your needs. The mechanical switch is activated by the foot switch, providing a distinct tactile response and crisp feedback sound. Non-slip pads on the bottom help prevent movement during use. This product includes key definition setting software compatible with supported systems, which can be configured after installation. (Note: For Linux users, configuration must first be completed on a compatible system before connecting the foot switch for use.) Suitable for a variety of applications including gaming, office work, machine control, testing piano keyboards, and quickly storing images. Model: FS20Pro Connection Mode: USB + 2.4G + BT4.0 Foot Pedals: 3 Switch: Mechanical Switch Battery Capacity: 230mAh Operating Voltage: 5V Operating Current: ≤ 3mA Color: Yellow & Black Material: ABS Package Contents: 1 x Three-pedal switch 1 x Data cable 1 x Receiver Only the above package content is included; other items are not part of this product. Note: Lighting effects and display differences may cause slight variations between the image and actual product color. Measurement error allowance is +/- 1-3cm.