Round Dome/R type dome/R-series dome/Round metal dome ISO9001:2008 SGS RoHS Round Dome/R type dome/R-series dome/Round metal dome 1.Spec:diameter 3-12.2mm2.Scope of Elasticity:100gf-350gf3.Travel:0.15 to 0.30mm4.Feel :50%+-10%5.life cycles:>1millionDimple1,3,4,5DimpleResistance< 1omhOperating Temperature-55~+85°CStorage Temperature-55~+85°CHumidity0~+80%CertifyROHS,SGS,AOV