ITW 12mm Mechatronic Waterproof Pushbutton Switches The 48 Series is a uniquely designed small, waterproof pushbutton switch that can be mounted on a panel or mounted on a PC board. The waterproof design of this series of switches are the seal design between the key and the panel and the key inside, both of which can reach the standard of IP67. This series of button color products have 8 to choose from, is a very affordable products for customers.