URC7935: My Streaming Device is controlled by Radio Frequency (RF) and not by infrared. Will it still work with this remote?

The One For All Streamer remote sends IR only.
However there is a possibility that it could be controlled using an IR remote by enabling the CEC feature, but we cannot guarantee this as it is dependent on the functionality of your TV and the Streaming Device.
Please see the section CEC Mode in the digital manual of the product for more details.

See also: What is the difference between Bluetooth (BT), Radio Frequency (RF) and Infrared (IR) remote controls?