
INSTALLATION INSTRUCTIONS
READ & SAVE THESE INSTRUCTIONS!
Apartment House
Intercoms
MODELS: 478-76 & 478-77
TWISTED
PAIR
Model 478-76
Use as a replacement control amplifier for the former
1.Install the Model 467 Postal/Main Door Timer module as described in the instructions packaged with the unit.
2.Wire the
TO APT. NO 3
TO APT. NO 2
DIR. | 1 |
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| 2 |
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DOOR REL. | INLCUDES: |
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POSTAL LOCK | 467 | A2 |
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| TWISTED |
478 |
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A1 |
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| ADAPTOR |
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LOBBY SPKR. |
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| PAIR |
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| ADAPTOR BOX | |
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| A2 |
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| A1 |
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| RING COMMON 1 |
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| A2 |
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| A1 |
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| CONTROL |
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| RING SWITCH |
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| GROUND |
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| 16VAC |
| REMOTE COMMON |
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| 16VAC |
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301
TRANSFORMER
486B
APT. NO 1
R
A2
A1
C
(Please see other side for Model