This is proof that a single button can control many switch machines. All you need is a capacitive discharge unit.
The CDU is a great thing. Not only does it power many switch machines at once it also provide protection for them. You simply cannot burn the solenoids since the CDU will not recharge until the button is released. It also protect against stuck elements by not recharging itself unless all is OK.
list of featured materials:
-Power pack: Model Power No.3800
-CDU: Miniatronics PDC-1
-Button: Atlas #56 control box
-Switch machines: Atlas N Code 55 Under-Table Switch Machines
-Wiring: stranded AWG22 all around
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