Otis ADA upgrade

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I am figuring an ADA mod for an old 50's model Otis. I need to make the car and hall call buttons light when pressed. The call relays are the old 3-legged coils (Z-8) and contacts cannot be added. I have been referred to Electrodyn's CR board which requires no additional wiring. Anyone have any experience with this? Roger Shumate Local 80 IUEC

-- Roger Shumate (RCShumate@cs.com), October 14, 1999




I've used the Electrodyne board once and it seemed to work pretty well.

I have also added diodes in the hook switch circuit to feed the car button lights. Works OK on a simplex, gets pretty involved w/ a duplex.

E-Mail me if ya need more info.

Glenn Schmitz Local #3 IUEC

-- Glenn Schmitz (gschmitz@earthlink.net), October 24, 1999.

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