Installation; Technical Features - urmet Nexo 1708/955 Handbuch

ENGLISH
The device Ref.1708/955 allows to install Nexo Ref.1708/1 video door phone into 5-wire systems with
electronic ring tone by replacing the terminal pins board provided with the video door phone.
For further details about the compatibility of this product with different systems, please refer
to the technical reference manual of door phones and video door phones products, section
"Product applications fi eld" that can be found on the site www.urmet.com

INSTALLATION

• Fix the video door phone bracket to a fl ush mounting box (see the booklet provided with the video door
phone Ref.1708/1);
The interface can be installed only inside Ø 60 mm fl ush mounting boxes with a depth greater
than 40 mm.
• Join the connectors to the video door phone and to the interface board;
• Connect the interface board to the system and place it inside the fl ush mounting box;
• Insert the video door phone in the bracket.
TERMINAL PINS DESCRIPTION
R1 Video door phone power supply negative
R2 Video door phone power supply positive
A Differential signal Negative
B Differential signal Positive
G Silent Auto on (video only)
RT Secondary video door phone power supply positive
R1 Video door phone power supply negative
CA Call signal
CA1 Floor call signal
2 Do not use
}
X1 Additional button terminal pins
X2 (for electric loads activation use a relay box)
}
Y1 Additional button terminal pins
Y2 (for electric loads activation use a relay box)
Do not change the position of the jumper placed near the video door phone connectors.

TECHNICAL FEATURES

Maximum current absorption in operative mode (only the interface Ref.1708/955): ...........100 mA @ 18 Vdc
Current consumption in standby: .............................................................................................5 mA @ 18 Vdc
DS1708-002A
1708/1
1708/955
3