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Alpha Series Single-Channel
Voice Communication Systems
  Alpha Series Single-Channel Voice Communication Systems are high in quality, yet
uncomplicated and cost-effective. In addition, they are designed for
simple operation.
Among their features:
 Presence
alert/announcement
with hands-free operation -- An arrival at the remote location is
announced by an LED at the master station and a repetitive beep tone.
Depending upon the type of presence detection used, the audio may be
programmed to turn off and on automatically or manually.
Durable remote stations
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Several remote stations are available in a wide selection of durable
assemblies for either indoor or outdoor use. These stations are
ruggedized and weatherized to operate under the most difficult
conditions.
Flexible mountings
-- A
wide selection of mountings that take up little or no valuable counter
space is available. Unique designs allow some master station mountings
to be adjustable, while others are fixed.
Low-cost installation
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All Marsh products are backed by a worldwide service network of more
than 400 authorized agents who provide fast, reliable, low-cost
installation and service. Replacement parts are available through your
local dealer or service agent.
Warranty confidence --
All systems carry a one-year factory warranty on parts when the system
installation has been performed or inspected by an authorized Marsh
service agent.
Characteristics
Master station
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Reliable, solid-state
electronics.
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Low voltage, low energy
consumption.
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Safe and easy to operate.
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Can pick up a whisper at 20 feet.
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Electronic voice range filtering
and automatic voice level control for clear, understandable audio
quality.
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Compatible with most presence
detector types.
Remote stations
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Optional trouble-free
press-for-service switches made from rugged stainless steel.
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Clear audio communication with a
minimum of unwanted external noise.
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Internal, hidden volume control
for each remote station.
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Low maintenance cost.
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Weatherproof speakers built to
perform well under all climatic conditions.
Remote monitor stations
Handset
Footswitch
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The footswitch provides a
"hands-free" means to activate the "TALK" switch when efficiency is needed most. Marsh footswitches are
completely sealed with a urethane coating to prevent damage from
oil, water, detergents and grime.
Headset
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