The ESP-C3-13U-Kit (2MB) Module with WiFi Modules ROHS manufactured by Ai-Thinker is a complete communication system consisting of an ESP8266EX WIFI SOC, an integrated PCB antenna and a comprehensive set of 2 MB Flash Data Storage. It offers up to 160MHz frequency and RF power up to 89.9 dBm. It has an onboard cipher chip for SSL/TLS encryption, as well as SIMCOM SIM 600x based modem for GSM/GPRS communication. The ESP-C3-13U-Kit has the ability to operate as an Access Point, Station, Soft-AP, and can support multiple communication protocols such as TCP/IP, SSL/TLS, PPP, MQTT, and OTA firmware updates. The integrated PCB antenna is designed to ensure maximum coverage and stability, while the on-module memory filter reduces interference and provides reliable connections. The unit comes completely assembled, with an easy-to-use form factor, and is designed for applications that require secure, long-range wireless communication.