Constructed from ultra-tough Zamac, EAO's S.series keypad range includes 12- or 16-key keypads with a choice of telephone or hexadecimal II configurations.The product offers extensive possibilities for customisation, such as 'halo' illumination around the character on each key in a range of colours or combination of colours. A library of more than 20 different illuminated key characters is available as standard. EAO also offers a character-design service if special markings are required as well as laser engraving facilities for non-illuminated keypads (subject to minimum order quantities). S.series keypads are sealed to IP67, are resistant to heat, shock and vibration, and have an expected life of four million operations.