Thermo King manufactures transport temperature control systems for a variety of mobile applications, including trailers, truck bodies, buses, shipboard containers and railway cars.

Requirements for the development of the keyboard:

• To function in all kinds of weather at any place on earth with living humans - without exceptions
• Minimum 1 mill. actuations
• Minimum 5 years' life expectancy
• Mountableg directly on a flat painted metal surface without edge protection

The result is a membrane switch solution with a special weather-proof design using special assembly techniques for adhesives. Cost-effective standard materials are used to instead of expensive special raw materials.