NRF24L01 is a 2.4GHz ISM band transceiver with auto-acknowledge and auto-retransmit capabilities, supporting up to six channels of data reception. The NRF24L01+ module features a high-performance wireless data transmission chip with an enhanced power amplifier (PA) and low noise amplifier (LNA), RF switch, and band-pass filter for full bidirectional RF communication, significantly extending the effective transmission range. The module includes 5V tolerant inputs, allowing direct connection of SPI pins to microcontrollers. This wireless module includes a small power SMD LED indicator. An onboard 3.3V voltage regulator supports a 5V input supply and delivers 3.3V to the attached nRF24L01+ module. Ideal for a wide range of applications including wireless remote control, sensor devices, RFID, smart grid, smart home systems, and wireless audio transmission. Specification: PA Gain: 20dB LNA Gain: 10dB Frequency: 2.4GHz ~ 2.5GHz Range: 800+ meters line of sight Multi-frequency: 125 channels Transmit Operating Current (Max): 115mA Receiving Operating Current (Max): 45mA Operating Voltage: 3 ~ 3.6V (Recommended 3.3V) Color: Black Material: Plastic + Metal Package Contents: 2 x NRF24L01+PA+LNA Wireless Transceiver RF Module 2 x SMA Antenna 2.4G 1100m 2 x NRF24L01 Wireless Module Breakout Adapter Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3cm.