If you want to make your wireless communication system with low cost, this wireless transceiver module is a suitable choice. It provides a good balance between wireless transmission performance and cost. You can easily integrate it with your own MCU/ARM/PIC/AVR/STM32 system. This NRF24L01+ module is designed with a power amplifier and SMA antenna, enabling wireless communication up to 800+ meters in line of sight conditions. A host microcontroller can communicate and configure the nRF24L01+ over a 4-pin Serial Peripheral Interface (SPI). The configuration registers are accessible via the SPI connection. Configurable parameters include channel frequency (125 selectable channels), output power, and data rate (250 kbps, 1 Mbps, and 2 Mbps). The on-chip voltage regulator accepts supply voltages from 1.9 to 3.6V. The module has 5V tolerant inputs that allow direct connection of SPI pins to compatible controllers. Internal filtering helps meet regulatory standards. The module radio uses Gaussian Frequency-Shift Keying (GFSK) modulation and fast Automatic Gain Control (AGC). The module includes an Interrupt Request pin that can wake the host microcontroller from sleep mode when a transmission is received, providing energy savings in battery-powered devices. Range: 800+ meters line of sight Frequency: 2.4GHz - 2.5GHz Working Voltage: 3-3.6V Max Max Current: 115mA Multi-frequency: 125 channels Quantity: 1 Set Color: Black Material: PCB + Plastic + Metal Package Contents: 1 x Wireless Module 1 x Antenna 1 x Wireless Module Adapter Board Note: Light reflection and different displays may cause slight color differences between the item in the picture and the actual product. Measurement allows an error of +/- 1-3 cm.