Sealed piezo switch with tactile symbols

January 27, 2015 // By Graham Prophet
PSE HI (high impact) switches can be delivered with raised symbols, letters and numbers in addition to various colours, or legend inscriptions. The switch surface is made of anodised aluminium, which can be pre-formed with raised symbols to withstand long-term wear and give good user haptics.

A variety of standard legends and/or raised symbols is offered to indicate function. The laser etched legends or pre-formed raised symbols provide long-term protection against wear. Raised symbols can be numbers, as well as characters from the Braille alphabet. These flexible design options make it possible to offer a wide variety of standard or custom options to meet individual design requirements.

PSE HI piezo switches have an ingress protection class rating of IP67. The hermetic seal makes the switches suitable for use in areas that must be regularly cleaned or disinfected. The switches have a robust metal housing, suited for use in harsh environments where there exists the potential for vandalism. Impact resistance according to DIN EN 50102 is IK06.

The switch is rated 0.1A @ 42 VAC/60 VDC. The piezo switching element offers a long service life of more than 20 million switching cycles. Typical applications include pedestrian crossing walks, elevators, truck lifts, material-handling equipment, safety equipment, ticketing terminals, service stations, food service equipment and processing plants.