HLK-7688A is a WiFi module manufactured by HI-LINK that is certified RoHS compliant, and is designed to help system integrators implement and manage their home network automation solutions. The module features IEEE 802.11a/b/g/n supporting WLANs and WPA/WPA2-PSK/Enterprise security, supports up to 8 SSIDs and has a rich feature set such as Web/SSH/Telnet console, SNMPv2c agent, local configuration, DHCP server/client, DNS proxy and more. It also supports a wide variety of IoT protocols, including MQTT, CoAP, TLS, and DTLS. The module is optimized for low power consumption with low levels of EMI, making it suitable for battery powered applications.