1. 4 speed dial alarm buttons and one SOS button;
2. SOS signal can be sent to the control center if the SOS button is pressed, so as to indicate the user's location precisely;
3. The guardian can search the user's location directly through message without the need for monitoring system;
4. Support active and passive monitoring;
5. Support the electronic fence function, and give alarm if exceeding the designated range (System support is required);
6. The monitoring center can search the user's location through message/GPRS (System support is required).