If you want to make your wireless communication system at a low cost, this wireless receiver module is an ideal choice! It provides a good balance between wireless transmission performance and affordability. You can easily integrate it with your own MCU/ARM/PIC/AVR/STM32 system. This NRF24L01+ module features a power amplifier and SMA antenna, enabling wireless communication of up to 800+ meters in line-of-sight conditions. A host microcontroller can communicate with and configure the nRF24L01+ via a 4-pin Serial Peripheral Interface (SPI). The configuration registers are accessible through 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 supports supply voltages from 1.9 V to 3.6 V. The module has 5V tolerant inputs, allowing direct connection of SPI pins to compatible controllers, including those used with Arduino IDE. Internal filtering helps meet RF regulatory standards with high margins. The module uses Gaussian Frequency-Shift Keying (GFSK) modulation and fast Automatic Gain Control (AGC). The module includes an Interrupt Request (IRQ) pin that can wake the host microcontroller (e.g., for Arduino IDE) from sleep mode when a message is received, providing significant energy savings for battery-powered devices. Range: 800+ meters (line of sight) Frequency: 2.4 GHz 2.5 GHz Working Voltage: 3 3.6 V Max Max Current: 115 mA Channels: 125 selectable frequencies Color: Black Material: PCB + Plastic + Metal Package Contents: 4 x Wireless Module 4 x Antenna 4 x NRF24L01 Wireless Module Breakout Adapter Note: Light and display differences may cause slight variations between the color of the item in the image and the actual product. Measurement error allowance is 1%.