We got one for vehicle and one for caravan, because: (i) we know our tow vehicle model is targeted by thieves, (ii) our hearts, souls, and bank account are tied up in our towing setup - so anything that makes us more at ease is a must-have. Easy set up. Easy to monitor from the App, and to check battery status (if battery quickly goes flat, then it's not getting a good signal - relocate it somewhere else within the vehicle). Setting watchdog mode gives peace of mind when away from home or leaving vehicle/van somewhere (even when it is in getting serviced!). Means we can relax more when travelling- definitely worth it.