Universal Replacement Remote Control Fit for RM-U305 for Sony AV STR-K402 STR-K502 STR-K502P STR-K502S STR-DB1070 STR-DB870 Universal Replacement Remote Control Fit for RM-U305, not original 90 days warranty, without manual and battery About setting: just hold the set button till light stays on as holding push device setting up. Add code light will blink use power button to test. Following guild for all functions After receiving, pls check carefully. If any question for the item, pls pls pls contact me SOON. Thanks! Only sold by AllureEyes US. We will provide a full refund if any quality problem.