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Are the 7900 control box components backwards compatible with the 901 and 902 control boxes?

The current 7900 control box parts are backwards compatible with the 901 and 902 control boxes.

Please note, the wiring will need redone. The current 7902 has 10 terminals while the 902 board only had 8. The 902 board did not have sequencing inputs or a sequence timer card as an option like on the newer 7902.

 

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