1-metal dome is a kind of PET sheet that carries metal dome contacts. 2-factory price 3.high quality 3.ISO19001,ROHS,SGS Specification: contacts on the arrays (sheets) are positioned over the contact point of PCBs. When a dome is pressed, the center of it contacts to the PCB and let the electric current flow through. This is how metal dome arrays work.Related Searches: metal dome array , mobile ...