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INSTRUCTION SHEET FOR FEDERAL SELECTFONE
Failure to follow all safety precautions and instructions may result in property damage,
I. GENERAL
The SelectFone
trial environments where the communication equipment is installed in high-noise areas, corrosive
atmospheres, hazardous areas, and extremes of temperature, dust, and humidity. The intercom
system allows the operator to both page instructions over the 15-Watt, 8-Ohm speakers and have
two-way conversations between two or more people on a telephone party line. With a five-chan-
nel intercom system multiple communication links can be established simultaneously without
cross talk or interference.
Ease of installation, simplified operation, simplified maintenance, unrestricted expansion, and
unshielded cable are some of the benefits of the Federal Signal SelectFone intercom system.
Typical installations include power plants, metal processing plants, mining operations, petroleum
and chemical plants, paper mills, water treatment facilities, and manufacturing, packaging, and
processing plants.
A typical SelectFone intercom station features an impact resistant, Cycolac® handset with noise
canceling dynamic transmitter, and a receiver with a built-in push-to-page switch for one-hand
operation. The front panel of each unit features a handset cradle equipped with a contact-less
sensor to indicate an off-hook condition, an 'off-hook' indicator LED, and channel selector switch
(on five-channel stations). In wall mount units, the 12-Watt paging amplifier, handset preampli-
fier, and power supply are enclosed in the housing. Desktop and panel mount units are equipped
with the cables and connectors required to connect to the Remote Subset (within 10 feet), contain-
ing the paging amplifier, power supply, and handset amplifier. The amplifier and power supply
assemblies features a plug-in design for ease of installation and service. Each unit is equipped
with a terminal block for simplified installation.
II. SPECIFICATIONS
COMMON SPECIFICATIONS FOR ALL MODELS
Power Requirements
Operating voltage
Standby Power Consumed
Operating Power Consumed
Handset Amplifier
Output
Voltage Gain
Frequency Response
Distortion
Controls
INTERCOM/PAGING SYSTEM
SAFETY NOTICES
serious injury, or death to you or others.
SAFETY MESSAGE TO INSTALLERS, USERS, AND
MAINTENANCE PERSONNEL
®
intercom and paging systems are designed for voice communication for indus-
WARNING
105-130 VAC 50/60 Hz, 21 to 28 VDC (Nom. 24 VDC)
10 VA 120 VAC, 3 Watts 24VDC
33 VA 120 VAC, 28 Watts 24VDC max
1.5VRMS max. into 33 ohm load
68dB adjustable
250-6500 Hz +/- 1.5dB
2% THD max at 1000Hz
Microphone Gain, Receiver Volume
®
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