If the right LED of TR4050-10 blinks red with three beeps instead of that the middle LED blinks green when you present Manager Enroll Card to TR4050-10

“Manager Card” function may not be enabled. Enable [Manager Card] function under [Reader] tab in the software Mifare Reader Utility.

Keep other settings as default. For more details on the default settings, see If you want to set the fingerprint reader of TR4050-10 to default settings.