Mr. Phillip Dwyer, a Mechanical Engineer from Purdue University, founded Dwyer Precision® in 1965. He had dedicated his life to the development of products for the seriously impaired. Dwyer Precision® sells its units world-wide to hospitals, nursing homes and long term care facilities. Mr. Dwyer originally started making the nurse call cords at the request of a friend who was in need of a safe alternative to electronic call cords, which could be used in oxygen atmosphere and could prevent hazardous electrical static discharge (ESD) back to the patient. Dwyer Precision® Products, Inc. has become the most trusted name in the oxygen safe air activated nurse call-cord field today. Special adaptors to match most all systems continue to be available at the Jacksonville Beach, FL plant. With the quality and ease of use, products you can depend on for over 55 years.