Door Lock

RV Lock Keyless Entry Door Lock Latch Handle for Trailer Caravan Camp with Remote Controller (RV Lock)

https://www.amazon.ca/Keyless-Handle-Trailer-Caravan-Controller/dp/B07TVY41B2/ref=sr_1_135?crid=1P4UNWKVRZV7O&keywords=rv+combination+door+lock&qid=1583191591&sprefix=rv+combination+lo%2Caps%2C194&sr=8-135

Installation

See https://www.campingtreasures.com/instructions/door-lock/