So if you have a Frsky radio transmitter in EU firmware and want to try the OSD function, we would recommend the no receiver version. You could add an external micro receiver that support the D16 protocol, like Frsky XM etc.
This DSMX receiver is NOT compatible with Spektrum DXe radio transmitter and OrangeRXRF module. For some Spektrum radio transmitter like DX6i/DX6e etc, the DSMX receiver may have a horrible range with your radio transmitter, please change the mode to DSM2 (DSMX in default). This issue is figured out by Micro Motor Warehouse.