The TS4-R-F is the Fire Safety version (Rapid Shutdown with power-line communication)
The TS4-R is a Retrofit or Add-on universal base. The TS4-R addresses the need for a retrofit solution that can be mounted on any existing installed PV system, connected to the existing PV module JBox, improving energy harvesting, greater flexibility, and increased control over the existing PV system. The offering for the retrofit project is composed of a two-piece solution: the TS4-R base, which is added on the solar module, and its covers, plug-and-play Flex MLPE which can be swapped in and out. It supports any of the wide offerings of the existing TS4 Platform functional covers and can also be designed into a new system or as a stand-alone base to accommodate any TS4 cover. All TS4-R covers feature UHD-Core technology.