truvello cameras

[pi55edoffnow]

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any body know how these work as ive been done by one and need to know how it knows your speed. ie a mini is smaller than my mondeo so the mini at 40 will pass over the sensors faster than my mondeo i have asked the manufacturer to supply info (if the sensors are put in the road wrong how do they calibrate the thing).ps they are taking me to court for not signing nip and not signing replying to request to sign ,I have letter from them saying they received the nip with info but unsigned ,dont they know the law?.
any advice welcome ps my first forum