The spec I have for Power Flarm indicates it works with Flarm and ADS-B. That is of very limited value in the UK. I would expect it to detect less than 15% of “threats”.
The MRX is about £400. It will detect about 50%. Being self powered and self contained it is truly portable and does not require any certification.
I have a presentation on collision avoidance, which lasts about 45 min to one hour. If you want me to travel to your area and give it, it will only cost you my expenses.
It covers;
The limitations of see and avoid
The different devices available
ADS-B and why it is of limited use
Flarm what it is and how it works
PCAS what it is and how it works
Some examples of accidents
How to use the kit to improve safety (some of which is counter intuitive)
Hard to “do” 3500 words in a forum enviroment!
Rod1