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laws. When it works, you will get warning of the coming speed cam.
2.4.2 How it works?
First it gets the GPS signal, and then compare it with the internal database.
If the data matches, then it will send out the warning before 500m. The
warning is voice, it will tell the speed cam type. And it will show the speed
limit on the screen. When you passed the speed cam, it will hide.
2.4.3 How to update database?
It is very easy to update database manually, follow
the steps below.
1. The correct database type
Get the new database and make sure it is the same
type as the internal one. If you are not sure the type,
please contact your seller.
2. Upgrade it into your DVR
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