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273 Branchport Ave.
Long Branch, N.J. 07740
(732) 222-6880
Use this product according to this instruction manual. Please keep this instruction manual for future reference.
MODEL NUMBER: TBH-104-LH
APPLICATION INFORMATION:
The TBH-104-LH 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-LH 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-LH is
compatible with most EKSU, KSU (1A2) and PABX systems. The TBH-104-LH may be used in single zone or multi-zone
applications. For typical connection applications for the TBH-104-LH, See Figure 2.
The 4 watt voice paging capability of the TBH-104-LH is ideal for use in noisy environments or for large areas. The talkback
capability of the TBH-104-LH will effectively service up to 1000 square feet, depending upon the background noise level. See Figure
1 and Table 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.
NOTE: All CAUTIONS and WARNINGS are identified by the symbol
Figure 1: Talkback Distance Vs. Ambient Noise
Figure 2: Talkback/Paging Connections & Applications
Copyright 1997 Wheelock, Inc. All rights reserved.
NOTES:
Thank you for using our products.
INSTALLATION INSTRUCTIONS
TALKBACK HORN SYSTEM
NOT SUPPLIED WITH HORN
. All warnings are printed in bold capital letters
Machine Shop
Manufacturing (Noisy)
Printing Shop
Assembly Line
Supermarket
Transportation -
Waiting Room
Office (Noisy)
Shipping/Warehouse
Table 1: Typical Noise Levels
Figure 2A: Optional S-H8 Second Horn Connection
Location
dB
90
80
80
75
75
75
70
70
P83676 A
Sheet 1 of 5
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Summary of Contents for Wheelock TBH-104-LH
- Page 1 APPLICATION INFORMATION: The TBH-104-LH 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-LH system when 2 horns are required.
- Page 2 The TBH-104-LH Horn should be positioned in a location that will project the paging output toward the area to be covered. The horn should be mounted at least 15 feet above floor level. The TBH-104-LH 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 The TBH-104-LH control unit is provided with 4 knockouts to accommodate 1/2 inch conduit for installation purposes. When mounting the TBH-104-LH outdoors, a 1/2 inch conduit with rain tight fittings must be used to prevent damage to the unit due to water.
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Page 4: Limited Warranty
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-LH has been connected, and listen for page alert tone. -
Page 5: Limitation Of Liability
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. THE FOREGOING LIMITED WARRANTY SHALL IMMEDIATELY TERMINATE IN THE EVENT ANY PART NOT FURNISHED BY WHEELOCK IS INSTALLED IN THE PRODUCT.
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