S5 & S7 Car Tracker - What is the Difference?

In this video we aim to give you a greater understanding of the differences between a Thatcham S7 tracking system and the higher specification Thatcham S5.
We include vehicle tracker brands such as Safe Track, Smartrack, Scorpion, Meta & Tracker. We do not go into the S7 Battery Powered Category as we will cover these incredibly basic devices in another video at a later date.
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