66250754-4G-EN - V2.0 - 28/03/22
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4000 Series GSM Audio Intercom - Technical Manual
4000 Series GSM Audio Intercom with Proximity
Wiring Diagrams
GSM4K/4G CONNECTIONS
Fig.20 shows the wiring connections for a GSM4K-1/4G and a GSM4K-1S/4G audio kit.
Art.4810/4G
For fail secure locks a
MOV must also be tted
across terminals C & NO and
for fail safe locks across C & NC.
For fail safe lock wiring move
lock wire from NO to NC.
Fig. 20
GSM4KCR/4G CONNECTIONS
Fig.21 shows the wiring connections for a GSM4KCR-1/4G and a GSM4KCR-1S/4G audio kit when the Art.4903 is used as a
standalone keypad. Fig.22 shows connections for a GSM4KCR-1/4G and a GSM4KCR-1S/4G audio kit when the additional access
code features of the GSM module are required when connecting it with the RS485 bus terminals to the Art.4903 keypad.
Art.4810/4G
To Antenna
OFFON
RS485 BUS TERMINATION
MOV
NO1 NC1
NO2 NC2
Art.4903
Fail Secure
Lock Release
For fail safe lock wiring move lock
wire from NO1 to NC1 and move
JP2 jumper to the NC1 position
Art.4810/4G
To Antenna
OFFON
RS485 BUS TERMINATION
MOV
NO1 NC1
NO2 NC2
Art.4903
Volt Free
Contacts
RS485 bus termination
jumper in OFF position
RS485 bus cable
(2 core twisted or CAT-5 where: 1 core = A, 1 core = B, 1 pair = 0V/GND)
For volt free contacts to gate
controls remove JP2 jumper
Fig. 21 Fig. 22
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