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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-R557 HT-SP904 HT-SP908 HT-SR750 HT-R508 HT-R550S HT-SR750S HT-SR800S TX-SR575S HT-SP904B
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-R557 HT-SP904 HT-SP908 HT-SR750 HT-R508 HT-R550S HT-SR750S HT-SR800S TX-SR575S HT-SP904B
basic ir remote; no programming needed;
Battery type it needed: two AA;
Sub for RC-645S RC-682M RC-608M RC-646S RC-651M