Luxury Legacy restroom trailers from Rich Specialty Trailers include state-of-the-art GPS and computer technology. Fleet operators can check vital functions remotely with an easy-to-use application on their cellphone or computer. Knowing the status of freshwater and waste tanks, electrical supply and unit temperature is only a click away. Busy owners can have the peace of mind and convenience of remotely monitoring their trailer, according to the maker. 260/593-2279; www.portablerestroomtrailer.com.