What is the difference between Local mode and Plus mode?

Features in Local mode
✓ Close-range opening via smartphone app (BLUETOOTH® technology)
✓ Up to 20 persons and app opening
✓ Pairing of up to 5 devices (separate administration)

Features in Plus mode
✓ Remote opening
✓ System network up to 5 devices
✓ Finger synchronization
✓ Notification when the door is opened
✓ Access log
✓ Automatic data backup
✓ Smart home connectivity & Amazon Alexa connection
✓ User extensions