The Guardian® APS Piezoelectric is a 4-wire standalone audible pedestrian station designed to enable inclusive and safe crossings without major cabinet modifications. It combines a solid-state piezo push button with audio and visual feedback, and offers a contactless version (Wave) for hygienic environments. It withstands extreme weather and supports Bluetooth® or USB configuration via the PedConnex® app. Ideal for solar-powered applications and high-traffic pedestrian crossings.