The Onkyo RC-645S replacement remote delivers instant control over your remote without any programming or setup. Verified with models such as the HT-SR504E, SR504S, TX-SR504. This aftermarket handset is also a direct fit substitute for the RC-646S, giving you a straightforward way to restore full command of your AV receiver and home theatre system straight out of the packet.
Ideal for households where the original handset has been lost down the couch, chewed by the family dog, or worn out from years of daily use, this replacement mirrors the familiar button layout Onkyo owners already know. No relearning required, just pop in batteries and point.
Technical Specifications
| Brand | Onkyo Compatible |
| Part Number | RC-645S |
| Device Type | AV Receiver Remote |
| Connectivity | Infrared (IR) |
Key Features
- Designed specifically as a Onkyo RC-645S substitute
- Compatible with multiple Onkyo AV models
- Instant operation — just insert batteries and point at your device
- Full-function access to all original remote buttons
- Durable ABS construction for long-term daily use
Compatible Part Numbers
This remote replaces the following part numbers:
Compatible Onkyo AV Receivers
This remote works with the following Onkyo av receivers:






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