The ESP-01 Breakout Adapter for ESP8266 serial to Wi-Fi transceiver module. Since the ESP-01 pinout is not breadboard friendly and unlabeled, this makes it inconvenient for rapid prototyping.
The nRF24L01 is a 2.4G Wireless Digital Audio Module DC-5V 44.1K Sampling rate 24bit AD sampling to achieve nondestructive high-fidelity digital audio transmission 16-channel selectable distance 100 meters on open ground.
