Product Specification Sheet APS353

Rev. 08/2013

4000A Series Master Intercom Stations - Desk/Wall

This Specsheet is for a product which is discontinued. Please contact us for alternative products.
4000/A18 (18 Station Master shown)
Architects' And Engineers' Specifications

The remote station(s) shall be Alpha Communications® / Elvox (4050/001, 9951 or 9971) or approved equal. Each remote station shall require only two (2) conductors to be connected to the 4000/A series master station.

The model 4050/001 shall be used for indoor applications, and shall feature a plastic enclosure with built-in desk / surface wall housing, and an over-sized Call button.

The model 9951 shall be used for outdoor or indoor applications, and shall feature a rugged, yet narrow, aluminum face-plate and metal speaker grille, with flush backbox / housing, and a large Call button, with built-in name-holder.

The model 9971 shall be used for outdoor or indoor applications, and features a rugged, yet narrow, aluminum face-plate and metal speaker grille, with surface enclosure, and a large Call button, with built-in name-holder.

Contractor shall observe all local and national electrical and building codes.

4000A Series Master Stations
The 4000/A series master stations combine modern styling with ease of voice operation to provide natural, clear voice communication along with remote call-in visual LED annunciation. The 4000/A series masters are available in configurations of 1-call, 3-call, 6-call, 12-call and 18-call capacities. The 4000/A series can only have one (1) master per system.

The master has a built-in amplifier and power supply and connects directly to standard 120VAC power, requiring no additional power supplies. Each 4000/A master has a selfcontained housing which allows the master to be mounted surface on the wall, or on a desktop.

The 4000/A series masters are used with the 4050/001 (indoor) desk/surface remotes, 9951 1-button flush (outdoor) remotes and the 9971 1-button surface (outdoor) remotes.

  • Simple push button operation
  • Easy Installation
  • Advanced design
  • Call-In LED Annunciation
  • Clear voice fidelity
  • Built-in amplifier and power supply
  • Paging capabilities (optional)
Durable, high-impact, flame-retardant, Beige ABS plastic
Positive Screw Terminals
Models Available
1-Call, 5.50"W (140mm) x 3.00"H (77mm) x 7.00"D (178mm)
3-Call5.50"W (140mm) x 3.00"H (77mm) x 7.00"D (178mm)
6-Call 7.50"W (191mm) x 3.25"H (83mm) x 9.50"D (242mm)
12-Call7.50"W (191mm) x 3.25"H (83mm) x 9.50"D (242mm)
18-Call7.50"W (191mm) x 3.25"H (83mm) x 9.50"D (242mm)
Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.