Solar Biotronic Laboratories Private Limited manufactures Push Button Switches in Sealed Keyboard panels. Solar Biotronic Laboratories Private Limited has received ISO 9001:2008 certification. Push Button Switches in Sealed Keyboard Panels comprise of low profile mechanical switches assembled on a printed circuit board which 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.