ALMAX Manufacturing

Polyester Dome (PolyDome) & Dual Circuit Actuators

Polyester Dome (PolyDome) & Dual Circuit Actuators

Unlike the previously mentioned membrane switch actuators, polydome switches do not include any metal dome or hard materials in its makeup. Instead, polydomes use conductive ink and 2 separate circuit layers so that they can work the same as a metal dome.

The polyester, or PET, is thermoformed to provide a stiff plastic dome. When the polydome is pressed, the conductive ink on the back of the polydome connects with the lower circuit layer to close the switch.