Out of the box, the Flipper Zero has a lot of capability.
There’s a built-in infrared transceiver that can both capture and transmit IR codes to control things like TVs.
There’s a sub-GHz wireless antenna that can again capture and transmit wireless codes to operate wireless devices and access control systems, such as garage door remotes, boom barriers, IoT sensors and even remote keyless systems.
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It can read, store, and emulate EM-4100 and HID Prox RFID cards.
The Flipper Zero can also read, write, store, and emulate NFC tags.
On the front, there’s a 1-Wire connector that can read and emulate iButton (aka DS1990A, CYFRAL, Touch Memory or Dallas key) contact keys.
Finally, on the top there are GPIO connectors that allow the Flipper Zero to connect to other gadgets in the real world, such as the Wi-Fi development board.