Product Specification Sheet APS004

Rev. 01/2014

VMH25WH / VMH25AWH Video-Intercom Monitors

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

The monitor station(s) shall be Alpha Communications® / S.T.R.™ VMH25WH (residential/commercial) or VMH25AWH (apartment house) type. Monitor(s) shall be mounted surface (or desktop using optional model TZ25WH adapter). Monitor(s) shall include a high quality 4.0" flat screen. Monitors using mirrors or other non-flat type screens shall not be acceptable. Monitor(s) shall feature front mounted controls for brightness, contrast and horizontal hold Monitor handset shall feature electret condenser microphone for exceptional voice fidelity. Handsets that include carbon transmitter or other voice technologies shall not be acceptable. Handset shall have a textured finish and heavy-duty coiled cord. Handset shall include a door release (KEY SYMBOL) button and auxiliary (RED DOT) push button. Push buttons shall be clearly visible and shall be marked in a different color. Handset shall include an adjustable volume AC buzzer (or optional R2007 AlphaTone™ chime adapter).

VMH25 / VMH25A Video-Intercom Monitors

The Alpha Communications® / S.T.R.™ VMH25 (residential/commercial) and VMH25A (apartment house) series monitors are designed to meet virtually any requirement for video-intercom security.

These attractive monitors are conveniently surface mounted right on the wall. Monitors can be changed to desk mount with the addition of a model TZ25 series desk adapter.

All VMH25 / VMH25A series monitors feature a crystal clear 4.0" black and white flat screen monitor (measured diagonally), textured finish handset (to minimize scratches and fingerprints), electric buzzer signalling (adjustable), heavy duty coiled cord with strain relief and two (2) momentary button switches. These switches can be used for door release or other signalling functions, depending upon system configuration. The VMH25 (residential/commercial) monitors feature a front-mounted 'ON' button to turn the monitor on without being called from an entrance panel.

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.

  • 4.0" (diagonal) Crystal Clear Black & White video screen
  • Convenient Full Duplex Voice Operation
  • Easy Installation (surface) or optional desk (with appropriate adapter)
  • Clear Voice Fidelity using Electret Condenser Microphones
  • Rugged and Reliable. Simple to Operate
  • Monitor/Handset feature quick disconnect wire harnesses
  • Low profile flush monitor protrudes only 2.25" from wall
  • Monitors may be used with HT2006 multi-call button handsets
  • Monitors feature rotary Brightness and Contrast controls
Dimensions: All VMH25 / VMH25A series monitors are 8.63"W (220mm) x 8.75"H (223mm) x 2.25"D (58mm). All dimensions shown are outside dimensions for the surface type monitor+handset, less the coiled cord.

50mm round, 45 ohms, Model HK1.

Microphone: Electret Condenser Type Model MK1.
Push Buttons: (1) with Door Opener (KEY) symbol and (1) spare (Red Dot).
Flush Back Box:
Model VBB. 7.13"W (182mm) x 4.38"H (112mm) x 2.75"D (70mm) wall opening. OPTIONAL. May be used for rough-ins.
Push Buttons: Model TZ25WH (White). Use in addition to the monitor unit. OPTIONAL.

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.