Designed for M5Stack Cardputer Specifically with plug-and-play Grove connection. No jumper settings required-quick connection and stable operation Dual Wireless Protocol Support Integrated with 2.4GHz NRF24 and Sub-G 433MHz CC1101 modules, this 2-in-1 RF board enables short and long-range wireless communication for various IoT applications Compatible with for Bruce firmware. Easily configure modules via RF-CONFIG menu. Supports CC1101 (legacy) and NRF24 protocols for seamless integration Physical Module Switch Switch between 2.4GHz and 433MHz modes with a built-in hardware toggle. No need to change hardware-just switch and go Reliable & Stable Performance Optimized PCB design ensures minimal interference and improved RF signal strength, perfect for DIY projects, RF sniffing, wireless control, and remote sensors Notice:For Educational and Research Purposes Only. Color:Blue Material:PCB Package Contents: 1 set * for M5Stack Cardputer