The electronic part GT-TC021B-H018-L1 is a White Rectangle button Surface Mount SPST SMD Tactile Switch manufactured by G-Switch. It features No Yes SMD Splicing, 50mA current rating, 5.6mm contact travel, 100MO resistance, 50000 cycles durability, 12V voltage rating, 250gf actuation force at ±30gf release force, 4mm panel thickness, and a temperature range of -30? to +85?. It meets ROHS standards.