I installed the keyless entry lock from RVlocks.com. We are VERY happy with them, installed over a year ago. The keyless entry lets you go to pool, spa or for a walk with out having to carry keys with you. Don't have to give keys to kids they can just punch in code and they are in. Like hydraulic leveling would not have another RV without it. Have just had to replace batteries, so they lasted quite awhile and we use our RV a lot. We have a hide a key in case batteries go out and we are not carrying keys.