http://www.sblindia.com - SBL India therefore offers a sealed pc compatible keyboard (industrial keyboards) which can withstand these harsh conditions prevailing on shop floors or other areas. Industrial keyboards with out enclosures can also be provided for direct assembly on the panels. These Keyboards comprise of low profile mechanical switches assembled on a PCB. This assembly is then mounted behind a front plate on which the polyester / polycarbonate Overlay is stuck.
These low profile switches have a lower operating pressure than Snap Domes (about 160 gF) and can be used in applications where the user needs to make larger data entries. The lower operating pressure makes it easier for the user to operate the keys. The total assembly height in such cases ranges between 12 to 15 mm.