The temperature transmitter can connect three digital thermometer via a single-wire interface. Digital thermometer do no need external power supply, and is powered directly by the temperature transmitter (temperature transmitter DC 5V external power supply). Temperature transmitter can quickly and accurately measure the temperature required to collect and eventually transmit data to the appropriate host by 2.4G RF wireless transmission technology.
To set the tracker send the following commands by SMS messages
Set the operator APN
Set the update interval 60 seconds
Set the GPRS server
Activate the GPRS mode