1. Used in vehicle rental, outer equipment etc. 2. Monitor ... remote targets.Locate precisely, Be widely applied in safeguarding vehicle,old,child,Pet,and managing personel; Track ... e. underground parking.6. Covert alert, remote listening-in.7. Power and signal indicator8. Automatically start the ... talk with a fixed number. Application:1. Used in vehicle rental, outer equipment etc.2. Monitor and protect ...