NRF24L01+PA+LNA 2.4G Wireless Module: High‑performance 2.4GHz RF transceiver module based on the NRF24L01+ chip, integrated with PA (Power Amplifier) and LNA (Low Noise Amplifier) for enhanced signal strength and improved reception quality. Up to 1100m Long‑Distance Transmission: Supports long‑range wireless communication up to approximately 1100 meters (open space, ideal conditions) with external antenna, suitable for remote control, telemetry, industrial monitoring, smart home, and other long‑distance IoT applications. External High‑Gain Antenna Included: Each module is equipped with a detachable external antenna via an SMA connector, effectively improving transmission distance, penetration ability, and communication stability in complex environments. Stable 2.4GHz ISM Band: Works in the global license‑free 2.4GHz ISM band, featuring low power consumption, high anti‑interference capability, multiple channels, and adaptive frequency hopping for reliable and stable wireless data transmission. Wide Compatibility with Arduino & MCU: SPI interface design, compatible with Arduino, STM32, ESP8266, ESP32, and various 3.3V microcontroller platforms, easy to integrate into existing projects for wireless upgrade and communication extension. Color: Black Material: Metal Package Contents: 1*module 1*antenna Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.