Datasheet

10 www.behnke-online.co.uk
Series 20 – Single
Application And
Performance Characteristics
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Door telephones for the industrial
sector (e. g. office buildings,
authorities, etc).
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On-wall or in-wall installation
possible.
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Connection to the telephone
system.
@
Door opener function.
@
The normal telephone acts as
remote station. Entry control
optionally available via mobile
telephone, DTMF dialling.
@
Please observe!
In loud surroundings (e. g. on a
street or a drive entrance), you will
require a telephone with a
larger space between the loud-
speaker and microphone for
acoustical reasons. In this case,
please select a double, triple or
quadruple telephone (see volume
classes page 8).
Dimensions
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Total dimensions (H x B x D)
120 x 120 x 81 mm
@
Dimensions rear housing part
(H x B x D) 75 x 100 x 90 mm
@
Recommended cavity installation
dimensions
85 – 95 mm (including space for
cabling etc).
BT 20-700 Aluminium
BT 21-700 V2A Design
BT 25-700 Illuminated aluminium*
BT 26-700 Illuminated V2A Design*
* 20-9500 mains adapter required!
BT 20-701 Aluminium
BT 21-701 V2A Design
BT 25-701 Illuminated aluminium*
BT 26-701 Illuminated V2A Design*
* 20-9500 mains adapter required!
option option
Series 20 – “Industrial Standard”
Door Telephones
SINGLE
Series 20 – Single
For operation in quiet surroundings
BT 20-700
@
Housing for wall installation
= page 21
* 20-9500 mains adapter
Do you have any queries?
Info Hotline:
+49 (0) 68 41 / 81 77-700
Do you have any queries?
Info Hotline:
+49 (0) 68 41 / 81 77-700