“This Feather Wing board integrates the nRF24L01+ module & allows it to communicate with other nRF24L01+ modules for low power data exchange.
Now you can use your Feather board to make use of the nRF24L01+ 2.4ghz wireless module. It works great to create a wireless network for module-to-module data exchange. The nRF24L01+ is great at low power applications and running off a battery. The wing also features a switch to tie the nRF24L01+ IRQ pin to a input for interrupt use. It can be switched off to free up a GPIO if needed. Battery monitoring is essential in low power and remote communications so the wing incorporates a voltage divider for monitoring battery voltage to the Feather.”