Toa TK-20 Bedienungsanleitung

TOA INTERCOM SYSTEMS

TALK-BACK UNIT

TK-20

DESCRIPTION

FEATURES

The TOA TK-20 Talk-Back Unit is designed for use with 1. May be installed in a switch box or on a wall.

the EXES-2000 and EXES-6000 intercom systems. When 2. Talk-back communication capability.

the TK-20 is connected to an external PA speaker, the 3. Audio trigger function with voice sensor capability.

speaker can function as a talk-back station (sub-station). 4. Call switch terminal provided.

The talk-back unit features an audio trigger function that

acts as a voice sensor to allow calls to be made from the

talk-back station to a registered master station. Calls to

the master station are also possible by using an external

switch that can be connected to the talk-back unit.

SPECIFICATIONS APPEARANCE AND DIMENSIONAL DIAGRAM

Applicable Exchanges

2-wire exchanges (EXES-6000/EXES-2000)

Usable Speaker

Conversation Method

Maximum Input Level

Audio Trigger Level

Call Switch Input

8 ohms, more than 1 watt

Press-to-talk (call from hands-free station)

Voice switch (call from handset station)

+30 dBm

-70 dBV to -40 dBV (0 dBV=1V)

One shot make contact at no voltage

(momentary type)

Transmitting Line

Current Consumption

Ambient Temperature

Range

Finish

Dimensions

Weight

Non-polar 2-conductor cable

17 mA

0°C to 60°C (32°F to 140°F)

Zinc-coated steel plate

65 (W) x 28 (H) x 114 (D) mm

2.56 (W) x 1.10 (H) x 4.49 (D) inches

230g (0.51 lb.)

*Specifications are subject to change without notice

ARCHITECT’S AND ENGINEER’S

SPECIFICATIONS

The TK-20 shall be the talk-back unit for the EXES-2000 and EXES-6000

intercom systems. By connecting the unit to an external PA speaker, the

speaker shall be able to function as a talk-back sub-station.

The TK-20 shall be able to receive calls from a master station. It shall

also be possible for TK-20 call-back unit to initiate calls to a registered

master station in two ways, either automatically by means of a voice-

sensor auto trigger function, or by use of an external switch connected to

the talk-back unit.

The TK-20 unit shall be able to be mounted in a switch box or on a wall,

with either standard metal mounting screws, or with two-sided adhesive

mounting tape.

Wall Mounting Installation

Flush Mounting Surface Mounting

TOA Corporation

Printed in Japan 833-63-028-90

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