while your car in in a overspeed condition,will you want a alarm for alert?and how to achieve it?

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8 years experiences professional Chinese manufacture for GPS Tracker producing and developing
iStartek VT600 Car tracker with overspeed buzzer alarm
If you are looking for vehicle tracker support overspeed buzzer alarm,our
VT600 is recommended.
We can connect VT600 output 1 with buzzer,then set a certain speed ,if
vehicle speed more than this value ,VT600 will trigger buzzer alarm.
Following is instruction for how to set VT600 buzzer alarm:
1.Upgrade VT600 Tracker with VT600V1.45_D10_20150919.Bin firmware
2.Connect VT600 Output 1 with buzzer
3.Send sms/GPRS command to turn on output 1 trigger buzzer alarm function
W******,042,Speed
@@<L><ID><0x4142><Speed><checksum>rn
Speed＝[0，255],0 means turn off this function.
Besides overspeed buzzer alarm function,VT600 tracker also support:
1》Connect with iButton for driver identification
2》Connect with Fuel sensor for fuel monitoring
3》Connect with Pin Switch for hood detection