Despite the name, Bluetooth Low Energy (BLE) has very little to do with the original Bluetooth, other than its use of the same 2.4 GHz frequencies. This is where [Dmitry] got the idea to use a 2.4 … ...

May 31, 2016 nRF24L01+ PA/LNA module specs look great on paper. Wireless communication up to 1000m in a small package readily available from a variety of cheap sources in China?

Features and Capabilities The NRF24L01+ Arduino wireless transceiver shield is packed with features that make it a versatile tool for various applications.