The ALPS SPVQA10504 with Detector Switches Press fit terminal, left type is a momentary contact open/close detector switch with a press fit terminal for convenient installation. It has a compact design that takes up minimal PCB space, and the momentary contacts open and close quickly for faster operation. The SPVQA10504 is also resistant to dust, water, and oil, and has a long service life. It is an ideal switch solution for small and medium sized devices that require a fast and reliable switch.