This category includes a wide range of IoT and wireless communication modules designed to connect your projects to the internet or other devices. Featuring popular modules like ESP8266 and ESP32 for Wi-Fi, SIM800 and A7672S for GSM/GPRS/4G, NRF24L01 for low-power RF communication, and HC-05 for Bluetooth, these modules enable seamless wireless control, data transmission, and remote monitoring in IoT, automation, and smart device applications.