6
Wire type and length
*1 Type: Single-pair cable with outer sheath (jacket)
Conductor: Copper solid
R A certified power supply wiring has to be used with this equipment. The relevant national
installation and/or equipment regulations shall be considered. A certified power supply wiring not
lighter than ordinary polyvinyl chloride flexible wiring according to IEC 60227 shall be used.
*2 When an extension monitor is used, make sure that the total wiring length from the doorphone to the
main monitor and then to the extension monitor, is within about 100 m.
*3 When using an electric lock or a connection device for option input (A contact), select a device that
meets the following guidelines:
R Electric lock connection terminal (S1/S2, S3/S4):
– N/O dry closure contact
– 30 V AC (1 A)/24 V DC (1 A) or lower
R Connection device for option input (A contact) terminal (IN1/IN2/IN3/IN4):
– Input method: No-voltage contact
– Open-circuit voltage between terminals: DC 7 V or less
– Detection definite time: 0.1 second or more
– Short-circuit between terminals: 5 mA or less
– Resistance value: make: 500 Ω or less, break: 15 KΩ or more
Wiring run
Wire type
*1
Diameter Length (Max.)
Doorphone –
Main monitor –
Extension monitor
*2
ø 0.65 mm 22 AWG 100 m
ø 1.0 mm 18 AWG 130 m
ø 0.5mm CAT 5 50m
Main monitor –
Electric lock
*3
ø 0.5 mm - ø 1.2 mm
(24 AWG - 17 AWG)
According to the
specifications of the
connected device.
Main monitor –
Connection device for
option input (A contact)
*3
ø 0.5 mm - ø 1.2 mm
(24 AWG - 17 AWG)
According to the
specifications of the
connected device.
Main monitor –
PBX
ø 0.65 mm CAT 3 or 22 AWG 100 m
SW274_IG.book Page 6 Friday, September 15, 2017 9:21 PM
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