... -time continuous tracking3,Three preset phone numbers used as SOS alarm number, press “SOS” key to call the set numbers directly ... , two-way talking.5,Black list function: Only the preset alarm numbers and the set monitoring number can call in, no ... monitoring.7,Speeding alarm8,GEO-fence9,Alarm for replacement of SIM10,Low power alert11,Dismantle alarm Applications:Vehicle renting business/out-door ...