A:Answer Mine works fine with the bluetooth receiver in the cab of the truck, about 30 feet from the trailer tires. I'm using 2 systems so that I can monitor the 4 tires on the camper AND the 4 tires on the truck. The app connects to only one bluetooth receiver at a time, which means that I can see pressures for only 4 tires at a time. But, to monitor the other 4 tires, all I have to do is turn their receiver on, and the other one off. Within a minute the app begins displaying data from the receiver that is now on.