Check the listing for details. Camplux 2.64 GPM RV Tankless Water Heater Propane Heater Black RS264b. Color: Black, Condition: Open box. Listed at 400.00 USD. Introducing the Camplux 2.64 GPM RV Tankless Water Heater Propane Heater with Door Remote RS264B. This high-quality tankless water heater is perfect for those looking for a reliable and efficient heating solution. With a brand name like Camplux, you can trust that this heater is made with the utmost care and precision. Designed specifically for RVs and small spaces, this tankless water heater is easy to install and use. It features a propane heater that provides hot water on demand, and a door remote control that allows you to easily adjust the temperature and other settings. Whether you're looking to upgrade your current heater or replace a broken one, the Camplux 2.64 GPM RV Tankless Water Heater Propane Heater with Door Remote RS264B is the perfect choice.