Thatcham Authorised: All of our trackers are Thatcham Accredited, Meaning they are actually subject to stringent security screening by Thatcham, if you want to determine their safety and usefulness. A GPS module communicates consistently with satellites to determine its exact locale, even though GSM technology achieves this by transmitting its https://sparxsocial.com/story11581317/5-easy-facts-about-caravan-trackers-described