You need a for your TV brand (see code list below).
This method allows the remote to scan through codes automatically until it finds one that works with your TV. Turn on your television manually. Point the ST-620 directly at the TV and press and hold the stang st 620 universal tv remote instructions better
Don't panic. Just remove the batteries for 10 seconds, put them back in, and start the process over from the beginning. This resets the remote to its default state. You need a for your TV brand (see code list below)
The LED should turn off once the code is accepted. Test the remote to confirm it controls your device. Common ST-620 TV Codes put them back in
✅ Now test VOLUME and MUTE.