LACROIX Sofrel S4W - S4 W GSM Cellular Communication; GSM Modem Capabilities; Micro SIM Card Installation

Case - GSM Connection
Case - GSM Connection
The compact case comes standard with a 2G/3G-compatible GSM modem: the RTU thereby communicates in GSM-IP with its
recipients (SCADA Central Station, Inter-RTU with other remote units, PC S4W-Tools, Email recipient) and in SMS.
Operation Communications Frequency Bands (in MHz)
- 3G
UMTS/HSDPA
B1 = 2100, B2 = 1900, B5 = 850, B6 = 800, B8 = 900, B19 = 800
- 2G
GSM/GPRS/EDGE
B3 = 1800, B5 = 850, B8 = 900, B25 = 1900
The 2G/3G modem does not provide any insulation; the antenna must therefore be put inside the building where the S4W is installed.
Otherwise, make sure to use an appropriate isolation device.
The GSM external antenna is the ‘Penta-band’ type (2G/3G compatible).
The SMA female connector is used to connect the ’0 dB’ ¼-wave GSM antenna.
(Tightening torque: 0.4 Nm max).
Make sure the RTU is switched off before inserting the SIM card.
Accessing the micro SIM card
Inserting and removing the micro SIM card is done on the left side of the case, by pressing on the bottom of the connector with
the contacts facing the rear of the case, until there is a locking click.
To insert the micro SIM card, open the flap on the left side of the case: this action does not require removing any
communication modules or disconnecting any I/O cables.
The bracket allows the antenna to be mounted
vertically on a metal ground plane: This metal
plane is necessary only when a ¼-wave GSM
antenna is used.
4-metre GSM antenna cable
Micro SIM
MicroSD