The Hope Microelectronics RFM68W-868S2 is a low-cost, low-power, high-sensitivity, sub-GHz wireless transceiver module. It is compliant to the European 868 MHz frequencies and transmits up to 10 mW power, allowing it to achieve a long link range and provide a robust communication link. The radio operates over a wide frequency range of 863 to 870 MHz, making it ideal for applications where long range or low-cost data transmission is required. This module supports a variety of communication protocols including GFSK, OOK, and FSK, allowing it to be used in a variety of applications. Its integrated LNA and PA, allowing it to achieve better link budget and higher sensitivity. Additionally, it has a built-in switching regulator, allowing it to operate from a single 2.3V-3.6V power supply. The RFM68W-868S2 is designed for easy integration into existing systems, making it an ideal solution for cost-sensitive applications.