GSM / GPS Telemetry System WP-RF-25X-R1 Series – User Manual
The following definitions are used throughout this document and generally in connection with the control unit.
Message
An SMS (‘text’) message sent from one mobile station to another.
Denotes a ‘space’ in the format of a message. Alphanumeric.
Characters in the range A to Z (upper and lower case), numbers in the range 0 – 9. Mobile.
A mobile telephone that is used to send and receive SMS messages.
SIM card
The unit will accept SIM cards of most types subject to the following restrictions.
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 purchased from RF Solutions can be topped up by credit or debit card by calling Virgin Mobile Customer Services on 0845 6000789.
4. SIM cards that have been protected by means of a PIN (in a mobile phone) will not operate in the unit.
5. Incoming voice calls to the SIM card should be barred before it is used in the GSM 250 unit to avoid any error messages being sent back the user. This can be achieved by calling the service provider (0845 6000789 – Virgin).
The SIM card should be inserted into the tray, which slides out of the side of the modem. On no account should the modem be removed from the PCB during this process since the connector between the modem and the PCB is easily damaged. To remove the tray the user must depress the small plastic tab to the right of the tray and pull out the tray.
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