RC-681M Replace Remote for Onkyo AV Receiver HT-R550 HT-R508 TX-SR575 TX-SR8550
Compatible with below Onkyo AV Receiver models No programming is required. Just install new alkaline batteries and it is ready for use. SKC550C SKF550F SKM550S SKW550. HTSR750 HTSP904 HTSP904B TXSR505 TXSR505E TXSR505B TXSR575B SKB550.