2.5mm high grade BS316 stainless-steel faceplate Functional button labels: numerical or alphabetical 1 up to 15 buttons that can be programmed to work functionally (dedicated button per residence) Backlit LCD display for full user notification and engineering settings Equality Act compliant options: Raster Braille engraving / High visibility yellow bezels (included) Panel engraving options: Address / location and colour logo options