See below list of repair parts for the Liftmaster RSW12U. This unit started production January of 2016 to meet the new UL325 safety requirements which include a mandatory monitored safety device.If you have an Liftmaster RSW12U and need parts you have come to the right place. We stock all of the major replacement parts for the Liftmaster RSW12U swing gate operator.We have a Liftmaster RSW12U parts breakdown that you shows you an exploded breakdown view you can clearly identify the parts you need and order it online from our store. This has been one of the best gate operators on the market for several years, we can help you keep it running even longer.