For installations where connection to external power is not available, practical, or cost-effective. Applications include motor vehicles and self-propelled equipment; non-propelled equipment such as: trailers; long-term stored or parked assets (boats, antique cars, RV's, campers); construction equipment; building supplies; and other temporarily-located assets that have value. Comes with universal installation kit, all-weather enclosure, solar charger system, and external antenna. You must have a valid TrimTracker Plus™ Annual Service Agreement otherwise your hardware will not work.