Sigtronics SPA-600 to SCI-S4 or SCI-S6
Intercom Wiring Changes
Page 1.
This is the first of 7 pages illustrating the wiring changes to take an existing SPA-600 installation and rewire it for a SCI-S4/6 stereo intercom. The illustration below is of the original SPA-600 installation.
SCI-S
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Page 4
Page 5
Page 6
Page 7
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