Ruth saw that our friends had a keyless entry lock on their camper. Apparently she hates having to carry a key at horse shows so I was commanded to get one. Not cheap but its only a ten minute install followed by 15 more to move the screen door latch out of the way

$250 but it had the best reviews and it was the only one that is all steel no plastic. from RVlock.com

programming the combo is fairly simple once you watch the video (paper instructions are not clear).
it also has remote fobs if you want to use it

Click image for larger version. 

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