We bought this product to help us be at ease leaving our two dogs in our van while we climb, hike, go out to eat or visit towns, especially in warm weather. We had always left them at home or didn't travel in warmer weather together. Found this product and it was a game changer. I practiced using it in my car first so I knew what to expect before using on a trip. There was a learning curve with the unit. It has to be fully charged before it can work, 7+ hrs. And the unit really likes to be plugged in. Yes it does still send me a reminder text/email when it is not plugged in but it really needs the full charge first and works better plugged in. If cell is spotty the unit has issues sending alerts. We have it plugged in but have not mounted it in the van to date as certain areas we travel have limited cell and the unit gets blocked at weird spots in the van. I always check to make sure I get a number and make adjustments to were it sits if not before we leave. We do have a 12V AC unit and can hear it from the outside but seeing the number makes us more relaxed. The AC unit is very quiet so it is deceiving some times from a distance. We have had a few issues with the unit. First the unit does not work in Canada. Which was kind of disappointing bc we were there over 2 weeks and the main reason we bought the unit. We understood bc we did have to get an international Verizon plan for our phones but disappointed there isn't an option for the Waggle. And didn't figure that out until we were there. The second issues was the unit wasn't resetting and we had to contact help to get it reset. It has now reset but it did take a few days to get it back up and running. There are helpful links on the app and it is fairly friendly to use. Play with the app first before traveling. When not using reset your notifications so you don't receive all the time. I highly recommend this unit. Can't wait for our next road trip. Our unit seems to do best if we keep it plugged in and charged when not traveling. Otherwise we are constantly resetting it when we need it and that can take a few hours/service. I just have to remember to bring it in to the house and not leave in the van when not traveling. Customer service has great when I have an issue.