The TG-12F with WiFi Modules ROHS manufactured by Ai-Thinker is a multi-purpose, compact and cost-effective Wi-Fi module allowing easy and quick WiFi connectivity for various low power devices. It supports both IEEE 802.11 b/g/n standards, allowing a PHY data rate up to 150Mbps. It integrates a STMicroelectronics STM32F103 micro controller with embedded 32bit MCU, internal SPI flash, multiple communication interfaces, along with 802.11bgn 1T1R Wi-Fi subsystem. This module has embedded build-in TCP/IP stack, supports 3 modes of operation (AP, STA, and AP+STA), and is extremely power efficient. It also supports two types of authentication modes: WPA/WPA2 PSK and OPEN.