13 - ENGLISH
CHARACTERISTICS
• Nominal BUS voltage supply : 28 V DC
•
For art. 20577-19577
:
- Maximum absorption (in calls): 150 mA
- Nominal absorption (on standby): 5 mA
•
For art. 14577
:
- Maximum absorption (in calls): 160 mA
- Nominal absorption (on standby): 15 mA
• Speaker: 16 Ω, 1W, 500 Hz - 20 KHz
• Microphone: 2 kΩ, 3V DC 0 .5 Ω, 50, 16 Hz - 58 KHz
• Operating temperature: +5 °C - +40 °C (for indoor) .
CONNECTIONS
See CONNECTION diagrams .
OPERATION
To make a call, press the call button . The internal plate will
enable any conversation .
For the best results, you are advised to speak from a dis-
tance of about 40 cms from the panel .
The Due Fili call button uses terminals ‘+12’ and ‘S’ to allow
the opening of door locks by means of an external 12 V
DC relay .
For installations details, see the attached diagram .
Speaker volume (V .E .) and microphone sensitivity (V .I .)
can be adjusted from trimmers located on the back of the
device .
