matrix array membrane 3x3 keypad grey transparent window membrane switch Product Description All of our products are custom made from dimension, color, material requirment, cable length, tracks pitch, total thickness etc.. Also add special structure to make the products more attractive, like backlight, fluorecent etc.. Expect for getting your design idea, then we will work hard together to achieve it. Technical Specification Environmental Operating Tem From -20 to 65 ℃/ -4 to 149 ℉ Storage Tem From -40 to 85 ℃/ -40 to 185 ℉ Seal 3M permanent acrylic adhesive resists against dus…