How the Poke Ball Plus works if set to Pokemon GO Plus mode with / without a Pokemon inside

The new Poke Ball Plus device has a couple of different functions. Not only can it work as a controller for Pokemon: Let’s Go, Pikachu / Eevee, but it also acts as a Pokemon GO Plus. Players can use it to send Pokemon to the Let’s Go games and collect rewards.

Nintendo has since provided new information on how Poke Ball Plus works if set to Pokemon GO Plus mode while having a Pokemon inside. When this happens and the device is acting like a Pokemon GO Plus, it will spin all PokeStops automatically without prompting you and providing the items. If there isn’t a Pokemon inside, it’ll vibrate similar to the Pokemon GO Plus.

Source, Via