1.Tact switch; 2.Widely used on various electronics machines; 3.Top partner:LG, ... ,LENOVO,FOXCONN 4.ISO9001;ISO14001 Detail SpecificationSeries NO. TSTPHWH=2.5,2.7,3.1,3.4,3.7,5.1,5 ... devices that require low profile and lightweight design. 6.2x6.2 series SMD Tact switch