Newer Jayco units, and most others, have a latch lock and a deadbolt. They have been different keys on all other RVs we have had. Our first gen Seneca, however, has only a deadbolt lock. I would not recommend storing any valuables in outside storage (such as basement storage cabinets). Those keys are very common across many RV manufacturers. You might consider storing valuables under the bed, with some sort of locking mechanism you add to that in addition to the door lock. I am considering that for the occasional times we carry something particularly valuable there.
2006 Jayco Seneca 34SS
2006 Jeep Wrangler Unlimited Rubicon Toad