Hi, I am a n00b on the 433MHz RF integration for the Arduino and this one has been causing me a little grief. The best recordings I got for decoding was using HDSDR/rtl-sdr audio captures and other methods proved relatively fruitless.
I traced back the device (read as searched: alibaba and made-in-china) to a manufacturer in China - UC Technology Ltd - model FT0021 and also quoted the Jaycar XC-0331 to them as a possible rebadge - they neither confirmed nor denied.
I sent their contact an email requesting assistance in supplying line-coding and data structures for hobby use. They forwarded the attached document. I can confirm that the decodes are pretty close (for the XC-0331). I haven't tried to confirm the data via CRC but the readings only seem to differ due to bit errors.
I hope you find the information useful and that you can share what you discover.
I'm keen to help where I can.
FT002T RF CODE.xls (23 KB)