/*  add a switch to relay controller  */


                     RELAY                                ___________________
                 ______________                tap in     |
                |              |                          |
  * NOTE *     x|----------|   |       |--------------- > X\
 remember the   |  coil    |   |       |                  | \
    diode      x|---\/\/\/\/   |       |   |------------> X  \
                |              |       |   |              |
                |              |       |   |              |__________________
                |   |>\    <|  |       |   |                  existing
                |   |  \    |  |       |   |                   switch
                |   |   \   |  |       |   |               like doorbell button
                |   |   x\  |  |       |   |                or X-10 box switch
                | --X---X---X--|       |   |
                        |   |__________|   |
                        |                  |
                        |__________________|

Copyright (C)1994 Roger Howard. All rights reserved. (Text file)
