NRF24L01 USB Adapter - Two modules are power indicator LED lights (Power Always ), NRF24L01 status indicator ( detection module blinks normal ) - Built-in watchdog anti-crash procedures, harsh environment industrial control occasions. - With this module you can do wireless serial transmission distance farther (100 ~ 1100m, depending on the use of wireless module ) , much higher than Bluetooth (10m) serial transmission distance - Product not Include NRF24L01 Module
