Turn on the particular device that you want to control with your universal remote, type the device's code into your remote, and push the Off button on the remote. Manufacturers often have multiple codes for each type of device, and you may have to enter several codes into the remote.
Programming all-in-one universal remotes is a fairly standard process, although some brands have unique steps. To program the VIZIO universal remote control, you must manually turn on the device you want to control, and then press the device button on the remote control for five seconds or until the LED light flashes twice.
The LED flashes once after each digit you enter, twice after you have entered the entire device's code and then turns off automatically. To check that the remote has accepted to code, point the remote at the device, and press the power button.
The RCA universal remote control requires you to press and hold the Code Search button after manually turning on the device you want to control. Then press and release the device button, and release the Code Search button. Press the power button repeatedly, and wait for the remote to discover the correct code for the related device.
The RCA universal remote also has an "aux" button for other devices, such as DVRs and video game consoles. Many manufacturers of universal remotes offer programming instructions and device codes online.