The ESP-01S Relay Module is based on AI-Thinker ESP-01S Wi-Fi Module. It is mostly used in smart home to control any device with the help of phone. The demo code is already uploaded in the ESP-01S just required to supply a DC5V and you can control it. It is designed for DIY projects, internet of things and smart home. It can be used by its APP or LUA source code can be used.

ESP32-Wroom-32(ESP-WROOM-32)is a powerful, generic Wi-Fi+BT+BLE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding.

ESP32-S3 CAM Module with a 2MP OV2640 camera, featuring 240MHz dual-core processor, Wi-Fi, Bluetooth, and microSD support. Ideal for IoT and camera projects.

The ESP-12 is a self contained 802.11 b/g/n WiFi enabled microcontroller featuring the ESP8266 SOC. Pin for pin compatible with other boards in the ESP-12x range with stability and wireless capability. It has 4Mbyte flash memory and software updates can be rolled out to it over-the-air. Use it as a cheap and easy way to add Wi-Fi connectivity to your Arduino / Raspberry Pi etc, or use it as a powerful standalone Wi-Fi enabled MCU in its own right.