I have bought a Relay G10 transmitter in order to use it with my YAMAHA THR10IIW . It connected two or three times to the wireless receiver of the YAMAHA THR10IIW and then it stopped connecting. I returned it and bought a second Relay G10 transmitter.
The second Relay G10 transmitter worked for about a month and then stopped being connected to the THR10IIW wireless receiver. Great disappointment for YAMAHA and Line 6.