The ESP-12K-PSRAM-IPEX with WiFi Modules ROHS is a compact, powerful, and reliable Wi-Fi module made specifically to make connecting IoT devices easier and faster. The product is manufactured by Ai-Thinker, a Chinese electronics company. This module is a perfect choice for applications such as home automation, security systems, and robotic projects. The ESP-12K-PSRAM-IPEX is a low-cost system-on-module featuring the ESP8266EX Wi-Fi system-on-chip, 4 MB of PSRAM, and external I-PEX interface. It supports 802.11 b/g/n, with WPA/WPA2 security and integrated TCP/IP stack. It also provides a UART, SPI, and I2C interface among other features. The module is compliant with RoHS (Restriction of Hazardous Substances) and offers an increased level of environmental safety for its users.