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273 Branchport Avenue
Long Branch, N.J. 07740
(732) 222-6880
MODEL NUMBER: TBH-104
APPLICATION INFORMATION:
WARNING: ANY MATERIAL EXTRAPOLATED FROM THIS DOCUMENT OR FROM WHEELOCK MANUALS OR OTHER DOCUMENTS
DESCRIBING THE PRODUCT FOR USE IN PROMOTIONAL OR ADVERTISING CLAIMS, OR FOR ANY OTHER USE, INCLUDING DESCRIPTION
OF THE PRODUCT'S APPLICATION, OPERATION, INSTALLATION AND TESTING IS USED AT THE SOLE RISK OF THE USER AND WHEELOCK
WILL NOT HAVE ANY LIABILITY FOR SUCH USE.
The TBH-104 is a two component talkback system which consists of a control unit and an 8 ohm horn, both of which are designed for indoor or outdoor
use. An optional S-H8 8 ohm horn may be added to the TBH-104 system when 2 horns are required. The control unit contains an omni-directional
microphone and a preamplifier for talkback. It also contains a 4 watt amplifier to power the horn which is used for one-way voice paging, background
music and tone alerting. The TBH-104 is compatible with most EKSU, KSU (1A2) and PABX systems. The TBH-104 may be used in single zone or
multi-zone applications. For typical connection applications for the TBH-104, See Figure 2.
The 4 watt voice paging capability of the TBH-104 is ideal for use in noisy environments or for large areas. The talkback capability of the TBH-104 will
effectively service up to 1000 square feet, depending upon the background noise level. See Figure 1 and Chart 1 for relation between noise and
maximum reply distance. The direction of speech is controlled by the calling party (at the telephone), to prevent false switching of speech direction due
to background noise.
Figure 1: Talkback Distance Vs. Ambient Noise
Figure 2: Talkback/Paging Connections & Applications
CAUTION: These devices are not intended for use in hazardous locations as defined by the National Electrical Code (NEC) and by the National
Fire Protection Association (NFPA).
Copyright 1988, 1989, 1990, 1991, 1993, 1994 Wheelock, Inc. All rights reserved.
NOTES:
INSTALLATION INSTRUCTIONS
TALKBACK HORN SYSTEM
Figure 2A: Optional S-H8 Second Horn Connection
Location
Machine Shop
Manufacturing (Noisy)
Printing Shop
Assembly Line
Supermarket
Transportation -
Waiting Room
Office (Noisy)
Shipping/Warehouse
Chart 1: Typical Noise Levels
dB
90
80
80
75
75
75
70
70
P81752 G
Sheet 1 of 4
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Summary of Contents for Wheelock TBH-104
- Page 1 WILL NOT HAVE ANY LIABILITY FOR SUCH USE. The TBH-104 is a two component talkback system which consists of a control unit and an 8 ohm horn, both of which are designed for indoor or outdoor use. An optional S-H8 8 ohm horn may be added to the TBH-104 system when 2 horns are required. The control unit contains an omni-directional microphone and a preamplifier for talkback.
- Page 2 The horn should be mounted at least 15 feet above floor level. The TBH-104 Control Unit should be located in an area with the least amount of ambient noise and the most convenient place for people to reply to the page.
- Page 3 OPERATING INSTRUCTIONS: Pick up telephone hand set and press the CO line button, or dial the number assigned to paging. When used with Wheelock Zone Control, next touch/dial single digit number assigned to zone in which TBH-104 has been connected, and listen for page alert tone.
- Page 4 18 months from date of manufacture (as determined by date code), whichever first occurs. Correction of defects by repair or replacement shall be at Wheelock's sole discretion and shall constitute fulfillment of all obligations under this warranty.
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