Over the past 30 years, Essex Keypads and Keyless Entry^® Access Control Systems have become the choice of security professionals worldwide.  Only Essex Keypads feature a proprietary, piezoelectric Billion Cycle Switch Technology™.  The result is a virtually indestructible,  weatherproof Keypad unsurpassed in its' ability to tolerate any environment (heat, rain, snow or ice - up to 3/8").  New laser marked keypad graphics allows for customization and withstands wear from high use and harsh environments. Professional Grade Keypads and Keyless Entry Access Control systems proudly designed and assembled in the USA and backed by a limited lifetime warranty.