Long Range Li-Fi Data Transfer Module is a visible light communication system designed for wireless serial data transmission using LED light. Supporting 9600 bps communication and 8–10 feet range, with adjustable receiver sensitivity, it is ideal for robotics, IoT, indoor navigation, RF-sensitive environments, educational projects, and optical communication experiments.

The USB to TTL Serial Converter Module is a reliable interface board for connecting computers with microcontrollers and TTL-based devices for programming, debugging, and serial communication. It supports 3.3V and 5V logic levels and features a Micro USB interface, pin header output, and accessible IC pins for flexible connections. Built-in TX/RX LEDs indicate data activity, while a 500mA fuse provides added USB port protection. Ideal for Arduino, embedded systems, GSM/GPS modules, sensors, robotics, firmware flashing, and electronics prototyping.