We make replacements for ALL manufacturers stations, EXCEPT Nutone for which we make a replacement system (you cannot just replace the stations). (See our Apartment Station Specification Sheet for more information.)

• 2 common system:
  
  Black wire to "1" on the amplifier
  
  Red wire to "5" on the amplifier
  
  Blue wire to "B or BW" on the amplifier
  
  
• 3 common system:
  
  Black wire to "1" on the amplifier
  
  White wire to "2" on the amplifier
  
  Red wire to "3" on the amplifier
  
  Blue wire to "B or BW" on the amplifier
  
  
• 4 common system:
  
  Red wire to "1" on the amplifier
  
  Yellow wire to "2" on the amplifier
  
  Blue wire to "3" on the amplifier
  
  White wire to "5" on the amplifier
  
  Black wire to "B or BW" on the amplifier
  
  

• 2 common system uses 3 wires: One “ring wire” and 2 common wires. The apartment stations will be labeled either “TALK, LISTEN, DOOR” or “ON, TALK, DOOR”.
• 3 common system uses 4 wires: One “ring wire” and 3 common wires. The apartment stations will be labeled “TALK, LISTEN, DOOR”
• 4 common system uses 5 wires: One “ring wire” and 4 common wires. The apartment stations will be labeled “ON, TALK, DOOR”.

Our ACS-35 universal amplifier replaces all manufacturer’s amplifiers EXCEPT Nutone, for which we make a complete replacement system.

All of our systems are 16VAC.

Our door strikes are 16VAC unless you specify another voltage.

Intercom installations typically use #20 or #22 AWG stranded or solid twisted pair.

The panel or station should be mounted in such a way that the highest button may be no higher than 52″ on center from the floor. More information is available in the Americans with Disabilities Act (ADA)

Check all connections. Make sure you have no shorts. Try using shielded cable from the “S” or “SP1” connections to the intercom’s lobby panel speaker.

We describe how to hook up amplifiers in our Amplifier Crossover Chart

You can view and pring out the Amplifier Crossover Chart found in our web site.

Check the DOOR button’s continuity. If it is “0” replace the station. If not, check for an ohm reading of 45-60 on the apartment station’s speaker. If that is ok, then call the factory for technical support.

Check the TALK button’s continuity. If it is “0” replace the station. If not, check for an ohm reading of 45-60 on the apartment station’s speaker. If that is ok, then call the factory for technical support.

Check the TALK and LISTEN button’s continuity. If either or both are “0” replace the station. If not, check for an ohm reading of 45-60 on the apartment station’s speaker. If that is ok, then check the intercom lobby panel speaker for an ohm reading of 45-60. If that is ok, then call the factory for technical support.

A flush panel sits flat on the wall and necessitates cutting a hole in the wall for the components on the back of the panel to fit through. A surface panel is attached to the wall surface and sticks out 2″ from the wall. No cutting is necessary.

The standard lobby intercom panel sizes are described in our Intercom Systems Size Options Data Sheet.

Yes. Master and Area Stations must either be surface mounted using a “surface mounting collar” or flush mounted into a Housing Devices supplied “Back Box.”

You need an amplifier cabinet if you are connecting the system to an existing fire alarm system and utilizing that system’s battery backup system or if you are using a separate UL listed battery backup system. If either of these examples apply then you must mount the amplifier into a separate amplifier cabinet.

New style are 5.5″ wide and are approved by the US Postal Service.
Old style are 4″ wide and are not approved for new installation by the US Postal Service. They may only be used as direct replacements for existing old style mailboxes that were previously approved by the US Postal Service.