Endress+hauser [india] provides indicating switches. This switch comes with all stainless steel [aisi 316l] housing for highest corrosion resistance, a patented ceraphire [pure ceramic 99.9 per cent algog] measuring element, 14-segment led display, backlit lcd display background of which changes to red on error, 340 rotatable head for display positioning, high accuracy, very low response time, short over voltage protection up to 1 kv, two switch points that can be adjusted either by push buttons on the housing head or by a pc through a usb interface. Ceraphant, thermophant and flowphant are ul, ce, sil, desina approved and are available for general purpose and hygienic applications. The pressure switches are available up to 400 bar and temperature switches are available up to 150 c measuring ranges, in the engineering unit of choice.
