On the remote, in the upper left corner, is a model number such as RC71. Then, on the receiver, in the lower right corner is a small card door. Inside that door is a model number, such as HR24. Those are the two numbers we need.
Actually you don't need any of that. Slide the switch on the remote to TV. Hold both mute and select until the light blinks twice then press "11758"then select again and then the remote works for a vizio TV. I set these remotes up for customers everyday