1.GPS Tracker,mute listening; 2.Cut fuel/circuit; 3.Over speed ... of Off-course. Application fields:Logistics vehicle,dangerous goods vehicle,personal car,leasehold vehicle,commercial vehicle and etc.Capability feature:Adopt industrial ... compatible,vibration endurable.Relevant accessories:GPS Main Device, GPS Antenna, GSM Antenna, Power Supply cable, Panic Button, Lock Vehicle relay, Monitor Mic.Device ...