Low operating voltage: 1.9~3.6V low voltage operation; High speed: 2Mbps, because the air transmission time is short, the collision phenomenon in wireless transmission is greatly reduced (software sets the air transmission rate of 1Mbps or 2Mbps); Multi-frequency points: 125 frequency points, meeting the needs of multi-point communication and frequency hopping communicationUltra-small: built-in 2.4GHz antenna, small size, 15x29mm (including antenna)Low power consumption: When working in response mode communication, fast air transmission and startup time greatly reduce current consumption.Low application cost: NRF24L01 integrates all high-speed signal processing parts related to RF protocols, such as: automatic retransmission of lost data packets and automatic generation of response signals, etc. The SPI interface of NRF24L01 can be connected by using the hardware SPI port of the microcontroller or using the microcontroller.The I/O port is simulated, and the internal can interface with high and low speed microprocessors, which is convenient for using low-cost single-chip microcomputers.Ease of development: Since layer is fully integrated on the module, it is easy to develop. Automatic retransmission function, automatic detection and retransmission of lost data packets, retransmission time and retransmission can be controlled by software to automatically data packets that have not received a response signal. Automatic response function, after receiving valid data, the module automatically sends a response Signal, no need for additional programming detection - fixed frequency detection Built-in hardware error detection and point-to-multipoint communication address control Data packet transmission error counter and detection function can be used for frequency hopping settings Can set six receiving channel addresses at the same time, optional The standard pin of the open receiving channel is Dip2.54MM pitch interface, which is convenient for embedded applications.Reminder: Generally, 2 pairings are used, both of which are transceivers, one can only transmit or receive, and cannot be used at the same time Material:PCB + electronic componentscolour:blackPackage Contents:10 * NRF24L01+ 2.4GHz Wireless ModuleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.