The 700 series Non-illuminated Keypad intended for use in wet or dirty environments. These modular keypads are designed to withstand the ingress of liquids and other contaminants, manufactured to survive the rigours of modern industrial use. This series is supplied in 4, 12, 16 and 36 key configurations. The keypad's unique modular design enables combinations of keypads to be used in the construction of more complex key panel layouts. This design feature is especially useful when the keypads are used in conjunction with the Storm universal keypad encoder. The exceptional reliability of Storm keypads is achieved by an ingenious but simple method of construction. A moulded rubber mat is secured around a rigid circuit plate providing its own environmental seal. Storm keypads have been successfully tested after submersion under 1m of water for periods in excess of 1 hour. This was achieved without using gaskets or sealing compounds of any kind.