EFP 2005 – loudspeaking doorphone
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5
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Terminal block at the lower left is for cable to outdoor unit.
Terminal block at the top left is marked "FREE". This is made as a help to the technician if
there is a need for joining wires etc. No one of the connection points are connected to each
other or to components on the PCB.
Description of the connections:
12V and GND is powersupply to the amplifier. Only use direct current (DC).
La, Lb is sound between indoor unit and amplifier box.
DB is DoorBell, one-pole switch in outdoor unit. Connects GND back to indoor unit.
LS is LoudSpeaker, sound to loudspeaker in outdoor unit. Non-polarized.
Mic+ and Mic- is sound from the outdoor units microphone. Polarized.
