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Control Board Overview
7.1
Caution! Do not run 110V AC power direct to the board. This will cause permanent damage to both
boards and void your warrantee. Caution!
CN1 - Upper left hand corner of board, used for power and back up power.
• VAC - terminals. The input terminals for the supplied 24V transformer. Polarity is not an
issue for this terminal.
• +BAT, -BAT - terminals. Input terminals for the optional backup batteries. The battery
power coming in must be 24V DC. This can be achieved by running two 12V batteries in se-
ries. During normal operation, the unit keeps the batteries charged and the batteries begin op-
erating the unit if no power is being supplied through terminals VAC. Observe polarity on
these terminals.
• +24, -24 - terminals. Accessories needing constant 24V power should be attached to these
terminals following the correct polarity. (Example: Alternate receiver, exit wand)
Continued on following page.