Product Specification Sheet APS356

Rev. 02/2014

870W / 902 Series 5-Wire Handsets

This Specsheet is for a product which is discontinued. Please contact us for alternative products.
902 Series Handset
Architects' And Engineers' Specifications

The handset station(s) shall be Alpha® / Elvox 870W or 902 series 5-wire handset(s).

Handset(s) shall be surface wall mounted, directly on the wall or over a single gang electrical 'gem' box. Handset(s) shall  be finished in a White ABS plastic finish. Handset(s) shall feature carbon transmitter type microphone assembly, to allow its use in new or retro-fit type systems. Handset(s) shall include a door release (KEY SYMBOL) button and auxiliary (LAMP SYMBOL) push button. Push buttons shall be clearly visible and shall be permanently marked in a debossed fashion. Handset(s) shall include a built-in AC buzzer for signaling. Handset(s) shall be used with the 931 series amplifier/power supply.

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

870W / 902 Series 5-Wire Handsets

870W Series Handset

The Alpha Communications® / Elvox 870W and 902 Series handsets are primarily designed to work as an apartment type handset intercom station. Both models are designed as 5-wire models. 

These attractive handsets easily surface mount right on the wall or over a single gang flush electrical back box (or plaster ring). The 902 handsets can be changed to desk mount with the addition of a model 2/901 desk adapter. 

The 870W and 902 series handsets feature electric buzzer signalling, carbon transmitter microphones and (2) two momentary button switches. These switches can be used for door release, paging or other signalling functions, depending upon system configuration. 

With the addition of a low-cost Model R2007 Alphatone™ chime adapter, you can easily change the electric buzzer to a modern warble chime tone sound.

  • Convenient Digital Duplex Voice Operation
  • Easy Installation - Only 2 Common (loop) Wires Required
  • Eavesdrop Privacy
  • Clear Voice Fidelity using Electret Condenser Microphones
  • Rugged and Reliable / Simple to Operate
  • Mounts Flush, Surface or Desk
  • Available in White, Grey, Ivory, Brown or Black color

870W series handsets are 2.50"W (64mm) x 8.75"H (223mm) x 2.25"D (58mm). 902 series handsets are 3.55"W (91mm) x 8.75"H (223mm) x 2.75"D (70mm). All dimensions shown are for the surface wall type handset, less the coiled cord.
White ABS plastic
Carbon Transmitter Type
Push Buttons:
(1) with Door Opener (KEY SYMBOL) and (1) spare (LAMP SYMBOL).
Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
TOLL-FREE: (800) 666-4800 • Web: • Email:
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Elvox is a registered trademark of Paso Sound Products Inc.
Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.