IRSW20B USB Reflective Photoelectric Switch Product manual： 1. Through-beam photoelectric switch (IRSW20B) is a customizable USB button.It is equivalent to a standard HID USB keyboard and mouse. The switch function can be customized to any key,combination, mouse or character string through the supporting software settings. After the definition is completed, no software is required during use. 2. Products are widely used in printers, copiers, game consoles, factory inspections, instrument control, equipment, etc. as well as mobile monitoring, proximity switch monitoring and occasions where it is not convenient to use mechanical switches to improve efficiency. 3. The switch adopts a through-beam photoelectric trigger mode. The infrared emitting tube in the device emits infrared light. If there is an object in the middle of the groove, the receiving sensor will trigger the corresponding key value if the infrared light is not detected. 4. Provides button definition setting software based on Windows system. After setting, you can use it in the following systems: Dos, Win 2000, Win XP, Win vista, Win 7, Win 8, Win10, Linux, Mac, Android. 5. Scope of application: office, game, industry, disabled person Function Description： 1. Keyboard function: It can be set to any key value or key combination, for example, to key value A or CTRL+A. 2. Mouse function: It can be set to the left, middle, right, forward and backward keys of the mouse, the movement of the X and Y axes, and the up and down scrolling functions of the wheel. 3. String printing: You can set up to 38 characters, for example, set "hello!". 4. Multimedia function: It can be set as previous song, next song, volume up, volume down and other multimedia control functions. 5. Gamepad function: It can be set as up, down, left and right four direction keys and 6 function keys. When you want to change the function of the button, you can use the FootSwitch software to modify the button function: 1. Insert the device into