The RRU401 is the compatible replacement for the RCR503BZ, controlling up to three devices including televisions, cable boxes, and DVD players from major brands such as RCA, Sony, Philco, Magnavox, Zenith, and Emerson. Programming is straightforward with an extensive built-in code library, and the intuitive button layout enables quick navigation across your entertainment setup. The compact design fits comfortably in hand for everyday use, while full backlit keys provide visibility in low-light conditions. Advanced learning capabilities allow you to customize functions and create macros for seamless multi-device control.

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