Features: Experience fast streaming with the BL M8821CS1 5ghz wireless module, featuring double band connection for stable 2.4GHz/5GHz networks and high speed data transfer in auditory/video setups. This module ensuring reliabled transmission and minimized interferences for clear auditory/video synchronization. Ideal for enthusiasts and users effortlessly integration into existing systems without complex tools or technical expertise. Perfectly suited for smart home theaters, gaming consoles, and commercial video setups requiring seamless multi device communication across diverse environments. Optimized for low power consumption and broad compatibility with WiFi 5/802.11ac protocols, it delivers uninterrupted performances for multimedia applications. Specifications: Chip: RTL8821CS Standard: 802.11a/b/g/ Frequency: 2.4GHz/5GHz Interfaces: SDIO Size: about 12x12x1.85mm/0.47x0.47x0.07in Power supply: 3.3V±0.2V Working temperature: -20°C~70°C Power: ≤19dBm Power consumption: ≤420mA Package Includes: 1PC BL-M8821CS1 double-band 5ghz module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.