The Storm 700 series keypad is available in key configurations of 4, 12, 16, and 36. The keypad design is unique and modular and allows combinations of keypads when there is need for more complex key panel layouts. Storm keypads are exceptionally reliable and that is possible due to the exceptional and ingenious construction. Environmental seal has been provided by a molded rubber mat that is secured around a rigid circuit plate. These have successfully tested even after being submerged for over 1 hour under 1 metre of water. This was done without engaging gaskets or any other sealing compounds. The keys ensure rapid and reliable data entry even in extreme conditions. Interchangeable keytop tiles allow for selecting keytop graphics to suit a particular application.