I managed to grab with Frequency Analyzer the keys “Holtek_HT12x” (screenshots attached) but when I emulate the garage door doesn’t pickup the command.
Attached are the button saved from Read, The raw readings for all the four buttons, and pics of the remote outside and inside.
Button and Raw Recordings and Remote pics:
https://drive.google.com/drive/folders/1_WSZS1uvifD30keLObHAXueLxfYb2pUx?usp=sharing
Thank you for your help.
Hello! I’ve recently messed with two Holtek devices, so I have a little experience. Here are my first two observations:
The FCC ID indicates that your remote is supposed to operate in the 286-320 MHz range (https://fccid.io/MMORC0196M), not in the 900Mhz as shown in your picture. I’ve found that when using the frequency analyzer, these devices tend to get detected up in that range (harmonic), rather than their actual operating range. So that would be the first thing I’d try. Use the Flipper in Read mode and start with 300Mhz and try to get reads from your remote, working up the range. I would anticipate you’re going to get readings around 310Mhz or 315Mhz, probably.
The second thing that might happen, is that your remote might not sit quite in the frequencies that the Flipper reads/sends by default. There is a workaround for this, but for now, see if you can get a solid reading in the 300Mhz range first.
Thank you! I’ve set the flipper like you said and I managed to find a new signal at 300.00
here’s the screen shot : Screenshot-20230619-193414 hosted at ImgBB — ImgBB
Do you need also the raw readings?
thank you vm
I’m assuming this one doesn’t work either (and depending on the firmware, it might even say transmission is blocked). See if you can get Reads on any other frequencies and save the sub files.
I’m very anxious to hear if you were successful or not 
This is a reason it’s sometimes better to be farther away. The harmonics are required to be much less powerful then the primary signal. With the square inverse law a few feet can make a huge difference.
I changed the battery of the remote and changed the frequency to 302ish and now every button it’s working!!
Thank you!!
I’m so glad to hear this! Fantastic!