Descriptions: It can be used by the seniors, patients, the disabled, kids, firefighters, and can be applied in mountaineering, outdoor tour, outdoor duty, military training, etc.
Model:HP503

Main functions
1. Real time tracking
2. SMS/GPRS Tracking: Capable of text message tracking (SMS) or internet tracking (GPRS)
3. Listern in the tracker
4. Emergency button for help
5. It can store 3 alarm numbers
6. Low voltage alarm
7. GPRS blind area compensation
8. Set electronic fence
9. Open and close e-fence function
10. Dual-channel transmission