Replacement for WF-8955 and Parallax 7155 converters.Also a replacement for 7145 and 7155 power centers Automatic three-stage converter/charger unit [Upgraded Silent Fan]Our WF-8955-AD-MBA RV power converter upgrades the fan to a temperature sensing device. When your RV converter reaches a certain temperature, the cooling fan starts running and automatically stops when the temperature drops, avoiding wasting your electricity bill. Completely silent mode, no noise. [Efficient Operation]55amp RV power converter is an automatic three-stage inverter and charging unit with overvoltage, overcurrent, overload, overheating, overcooling, short circuit and leakage protection, built-in cooling fan, making the power operation more stable and efficient. WF-8955 is suitable for a variety of travel trailers from AC to DC converter chargers. [High Quality]Our WF-8955-AD-MBA RV inverter adopts aluminum alloy setting shell protection, adopts small mini cooling fan to enhance the heat dissipation effect, and high temperature resistant material circuit board and capacitor design, which increases the service life of 55amp RV power board components and reduces replacement time and cost Colour:Photo Color Material:Metal + Plastic Package Contents: 1 x RV Three-Stage Power Converter Unit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.