The Growatt RF Stick serves as an extension to the Shine Link Lanbox.
Up to 6 inverters can be connected to the lanbox. To connect an additional inverter to the lanbox, you need an additional RF Stick, which ensures that your additional inverter can also transmit a radio signal.
Monitor all your inverters via 1 Lanbox, without having to pull a LAN cable and without having to use the wifi.
For more information, see the shinelink lanbox datasheet.
Datasheet