(Product features of MTK7620A 7612E (can be brushed with PHICOMM K2): 1. Routing access, promotion authentication, AP management, and advertising injection into a four-in-one promotion box. 2. Kernel mode authentication protocol (WiFiDOG), stable and high concurrency. 3. Pan-domain whitelist, simplifying the complex. 4. Diversified authentication methods: WeChat connected to WIFI, WeChat forced attention, SMS, virtual SMS, APP, etc. 5. Cloud management functions such as remote management, configuration and distribution, and one-click upgrade can effectively reduce operation and maintenance resources. 6. AC functions (bypass AC, multiple SSIDs, seamless roaming, load balancing, channel optimization, multiple templates, online status, AP tracking, offline AC, AP alarm and rescue))