The UK-B0206-G3.8-250 is a tactile switch made by USARKO that is 4.5x4.5x3.8mm in size. It is designed for use in various electronic applications, such as computers, game consoles, and audio/video equipment. This switch is RoHS compliant and features a multi-pole, normally open configuration that is used to detect user input. It is capable of operating with a maximum operating voltage of 250V. The switch also meets UL, CSA, and VDE standards.