User's Manual
CHAPTER2
Installingtheremotewirelessmodem
10
Figure 2. RA440 Remote Wireless Modem (top down)
• The GSM/GPRS antenna and the ISM antenna must be separated
by at least 1 meter (3 feet).
• As with all wireless communication devices, the higher the
transmitter is installed, the better the communication will be.
SpecialnotesonGSM/GPRSfunctionality
The RA440 incorporates a GSM/GPRS modem that uses a GSM cellular
network to interact with the A850 gateway. The data is transmitted
using a GPRS data transmission. Before you install the remote
wireless modem you must make sure that a sufficient cellular network
signal (including GPRS coverage) exists within the area you will use
the RA440.
Note: You can use a standard mobile phone operating with the planned
cellular provider to determine whether you have the proper network
coverage. Most mobile phones have some sort of symbol on their
display to show if GPRS connectivity is available.
You also need to insert that cellular provider's SIM card into the
RA440's SIM card holder to enable proper operation. Follow these
steps to do so:
1. Open the lid of the RA440 by unscrewing the four bolts in the
corners of the unit and opening the lid onto the right side as
shown in Figure 3 and Figure 4.
Note: To open or close the lid of the RA440, use a 5mm hex key (also called
an Allen wrench/key).