Datasheet

13www.behnke-online.co.uk
Dimensions
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Total dimensions (H x B x D)
300 x 120 x 76 mm
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Dimensions rear housing part
(H x B x D) 265 x 100 x 72 mm
BT 20-111 Aluminium
BT 21-111 V2A Design
BT 25-111 Illuminated aluminium*
BT 26-111 Illuminated V2A Design*
* 20-9500 mains adapter required!
option
Series 20 – Triple Vertical
Application And
Performance Characteristics
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Door telephones for the industrial
sector (e. g. office buildings, autho
rities, etc).
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On-wall or in-wall installation
possible.
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Connection to the telephone
system.
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Door opener function.
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The normal telephone acts as
remote station. Entry control
optionally available via mobile
telephone, DTMF dialling.
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Integration of other functions
possible (e. g. a camera etc).
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Recommended cavity installation
dimensions
75 - 85 mm (including space
for cabling etc).
BT 20-211
TRIPLE VERTICAL
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Housing for wall installation
= page 21
* 20-9500 mains adapter
Series 20 – “Industrial Standard”
Door Telephones
Door telephones Series 10
Door telephones Series 20
Door telephones Series 30
Industrial telephones
Emergency telephones
Elevator emergency call systems
Accessories Contents and
Introduction
Stainless steel columns
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