Pub. 42004-638L2
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374
800-492-1212
Fax: 610-796-5954
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G A I - T R O N I C S ®
A H U B
B E
L
L C
O M
P
A N Y
Model 780-301 and 7805-301 Page/Party
®
Handset Stations
for Cenelec Zone 1 Applications
Confidentiality Notice
This manual is provided solely as an operational, installation, and maintenance guide and contains
sensitive business and technical information that is confidential and proprietary to GAI-Tronics.
GAI-Tronics retains all intellectual property and other rights in or to the information contained herein,
and such information may only be used in connection with the operation of your GAI-Tronics product or
system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any
third party.
General Information
The assembly described in this manual is a speaker/amplifier housed in an explosion-proof cast aluminum
enclosure equipped with a handset. The assembly is designed to be installed in hazardous areas where
combustible gases exist or may exist.
The aluminum enclosure, while not gas tight, is designed to withstand repeated internal explosions
without expelling gases hot enough to ignite the external atmosphere. This is accomplished through the
use of a precision machined flame-path opening that cools the exiting gases to a temperature below the
flash point of the external, explosive atmosphere.
Application
The hazardous area Page/Party
®
Handset Station provides clear paging communications even in high
noise areas where explosive atmospheres exist or may exist. The Model 780-301 Single Party Handset
Station and Model 7805-301 Multi-party Handset Station are BASEEFA approved to CENELEC
Standards Ex dib for Zone 1 Group IIC T5.