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Posted

D (perm neg supply) SCB -

C (tamp return)      SCB rt

A (perm pos supply) Bell +

B (sw neg in alarm)  Bell -

S (sw-ve strobe)    STB-

 

If you have a DVM just check the functions of each terminal.If you are unsure , connect the bell using a small length of wire to the panel temporarily, its a lot easier to ensure correct operation than up a ladder.

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