SF2500 supports distress alert via SMS.
A reporting SMS server number must be defined in order to keep the SMS server number can be configured under Settings>>GPS reporting>>SMS server number in the menu. Distress alerts will be in the form of protocol messages under this configuration. Please refer to the protocol document for more information.
When SMS mode is selected, if you want to receive pre-defined SOS messages, emergency numbers and emergency messages must be pre-configured. They can be configured under Settings>>Alarm >> Alarm reporting button >> Emergency num and Settings >> Alarm reporting >> Alarm button >> Emergency text in the menu. GPS information will be appended to the pre-defined SOS message.