RC-681M Replace Remote Control, fit for Onkyo Home Theater AV Receiver:
HT-R550 HT-SR800 HT-SR800B HT-SR8000S TX-SR505 TX-SR575 TX-SR575X TX-SR8550 SKW-550 SKM-550S SKF-550F SKC-550C SKB-550 TX-SR505E
HT-R550 HT-SR800 HT-SR800B HT-SR8000S TX-SR505 TX-SR575 TX-SR575X TX-SR8550 SKW-550 SKM-550S SKF-550F SKC-550C SKB-550 TX-SR505E