Installation Manual
Installation Manual
Installation Manual
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Chapter 4 ������������ ��� �������<br />
4.2.1.7.6 Connecting a doorphone<br />
2 doorphone types are available, depending on the operating mode used:<br />
- Type A: relay-controlled doorphones (e.g. NPTT)<br />
- Type B: doorphones controlled by MF Q23 signals requiring an SLI interface (e.g.<br />
TELEMINI and UNIVERSAL DOORPHONE)<br />
The doorphone interface comprises an intercom and an optional latch powered by the mains<br />
supply through a SELV (Safety Extra Low Voltage) transformer.<br />
It is connected via the DOORPHA and DOORPHB outputs (control contacts open when idle)<br />
of the DOORPHONE connector.<br />
Connecting an NPTT doorphone<br />
4-18 ������������ � ����� � ����� ���� � ������������ ������