DS-SHADOW-0d ©2008 REG No 277 4001, ENGLAND. Page 4
THE SHADOW
COMPLETE GPS TRACKING SYSTEM
3. SIM Cards
Two Vodafone Pay-as-you-go SIM Cards are bundled with this system. The Shadow system can use either
these or other SIM Cards / service providers with the following provisos;
Notes
1. Only 3 Volt SIM cards will be correctly read and older 5 Volt types will be ignored.
2. Some types of pay-as-you-go SIM cards may require regular call activity (once every six
months) to remain registered.
3. SIM cards that have been protected by means of a PIN (in a mobile phone) will not operate in
the unit.
4. Because the Shadow system works by sending text messages, it is important that you
consider the costs involved with using the system, these will be dependant on the
network provider you choose.
5. For heavy use it might be advisable to obtain use a contact for free to text deal from a
Service Provider.
6. Incoming voice calls to the SIM card should be barred before it is used in the Shadow
Tracking System to avoid any possible errors. This can be achieved by calling the service
provider.
7. The message memory of the SIM card should be clear before it is fitted to the GSM Shadow
System.
4. USB GSM Modem Base Station
The USB GSM Modem Base Station connects to the Base Station
computer and communicates with the Shadow Trackers via Text
messaging.
Do not plug the modem into the PC prior to installing software!
The GM Modem Base Station is a Plug and play device which is powered directly by the USB port and therefore
requires little set-up.
Simply install the drivers for the product, insert a SIM card and plug into a free USB port.
More details can be found at http://www.rfsolutions.co.uk/acatalog/GSM_Modems.html
Tip: This modem is not tied to the Shadow Tracking System and may also be used as a standard GSM/GPRS
modem if required.
