Alpha IS543 Universal Intercom Station for 5-Wire, 4-Wire or 3-Wire Systems

Model No
Product Highlights
    • Non-returnable or refundable

The IS543 from Alpha is a universal apartment intercom station which combines modern styling with ease of operation to provide natural, clear voice communication and positive door release operation. The white, high-impact, ABS plastic faceplate blends with any decor. The advanced circuitry and versatility permits use in large or small buildings, with one or several entrances. The patented* design of this station allows for connection to popular 5-wire, 4-wire or 3- wire intercom system configurations, with a single model station. In addition, the 2 vertical and 2 horizontal mounting holes allow the IS543 to mount over a single-gang electrical back box (or mounting ring) or over the Ih201 and/or Ih202 flush housing(s). This unit replaces at least 6 models of existing intercom stations! With the addition of the optional model AP543 adapter plate, you can now replace 9 existing stations. A wide variety of optional accessories is available to provide additional functions such as multiple entrance operation, post office door release, etc.


  • Surface mounting or mounts over flush housing
  • Simple, push button operation
  • Easy installation
  • Patented* design allows use on 5-wire, 4-wire or 3-wire systems
  • Clear voice-quality
  • Precision-engineered for reliability
  • English and international (graphic) symbols
  • Braille lettering on faceplate
SKU  IS543
Manufacturer  Alpha
Intercom Type  Audio Intercom
Connection Method  Multi-Wire Digital Systems
Weatherproof    Outdoor
Material  Plastic
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Availability: In stock