Here is the list of devices compatible with the SAPN Flexible Export controller on a SwitchDin droplet:
Fronius: Primo, Eco, Symo,
SMA: SB2.5-1VL-40, SB3.0-1AV-40, SB3.6-1AV-40, SB4.0-1AV-40, SB5.0-1AV-40, SBS6.0-10, SB3.0-1AV-41, SB3.6-1AV-41, SB4.0-1AV-41, SB5.0-1AV-41, SB6.0-1AV-41, STP10.0-3AV-40, STP8.0-3AV-40, STP3.0-3AV-40, STP4.0-3AV-40, STP5.0-3AV-40
Fimer UNO: DM-1.2-TL-PLUS, DM-2.0-TL-PLUS, DM-3.0-TL-PLUS, DM-3.3-TL-PLUS, DM-4.0-TL-PLUS, DM-4.6-TL-PLUS, DM-5.0-TL-PLUS, DM-6.0-TL-PLUS, DM-3.3-TL-PLUS-US, DM-3.8-TL-PLUS-US, DM-4.6-TL-PLUS-US, DM-5.0-TL-PLUS-US, DM-6.0-TL-PLUS-US
Growatt: 
MIN 2500TL-X, 3000TL-X, 3600TL-X, 4200TL-X, 4600TL-X, 5000TL-X, 6000TL-X|
MOD 3000TL3-X, 4000TL3-X, 5000TL3-X, 6000TL3-X, 7000TL3-X, 8000TL3-X, 9000TL3-X