Interesting they are covering more than just ADSB
" The main equipment able to be used on an aircraft for EC purposes currently available (and that a refund can be claimed against) includes:
ADS-B Out capable transponder inclusive of GNSS position source (Mode S ES Enabled).
ADS-B Out capable transponder without GNSS position source (Mode S ES)
Certified GNSS source for Mode S ES transponders (Including a GNSS position sources in line with the recently published AIC2019Y141, example being Trig TN72)
Pilot Aware Rosetta
Sky Echo 2
We will consider requests from device manufacturers for alternative or newly developed equipment to be added on a case by case basis. "