User guide

How ROAD ANGEL works
ROAD ANGEL works by comparing the position of your vehicle using GPS
technology against the database inside the unit of safety cameras and accident
blackspots.When approaching a known danger zone, the LCD display turns from
blue to red and the type of danger is shown.The bar counter starts to count up
as the danger area gets closer. Speech warnings will tell the driver the type of
zone followed by a audible tone that increases with proximity. ROAD ANGEL has
a built in Laser detection circuit that will warn the driver with both speech and
audible tones if the vehicle is targeted. Once the warning has ceased the unit
returns to standby mode.
Global Positioning Satellites (GPS)
Operational since 1990, 24 satellites orbit the earth at a height of 11,000 miles.
At any given point on the globe, at least 4 satellites are in view at any one time.
Using sophisticated aerials and triangulation techniques, units such as ROAD
ANGEL are able to compute your exact position with great accuracy.
ROAD ANGEL uses complex heading software so it alerts you only in the
direction the camera enforces. For any GPS device to work it must see a clear
view of the sky. ROAD ANGEL has an internal high sensitivity GPS antenna, this
means the unit must be placed onto the dashboard to give it a clear view above.
If the unit needs to be fitted elsewhere then an additional antenna will be needed
(Please contact Blackspot Interactive Ltd. for details).
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