The YTSA010A0201804B Tactile Switch is a RoHS-compliant, spst, smd, 3mm x 2mm, blue round button brick nogging switch manufactured by DGBZ. It has a non-splicing construction, a 50 mA current rating, a 4mm travel length, a 100 meg ohm resistance, a 50000 cycle life, a 180gf actuation force, and a 12V voltage rating.