elmeg C46e Description And Installation page 45

Pabx system
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B au g ru p p e TFE
H ör und
Sp rec hw eg
B ell b utton
Sp eaker
M ic rop hone
D o o r p h o n e
D o o r o p en er
Fig. 30: Interfacing a door intercom
Potentialfreie K ontakte
TFE
Türö ffner
D o o r p h o n e am p lifier
41
1 2 V~ p o w er su p p ly (in tern al fro m th e
d o o r in terc o m am p lifier, o r fro m an ex tern al
b ell tran sfo rm er)
2 3 0 V~ p o w er su p p ly

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