The TX433-FPC-3208 is a wireless module manufactured by ZIISOR that has a size of 32mmx8mm and is RoHS (Restriction of Hazardous Substances) compliant. This module is designed to be used for the transmission of 433MHz signals and is small in size, allowing for use in applications where space is at a premium. The module features an on-board antenna for efficient transmission of signals, and boasts a strong signal transmission distance of up to 500m. It is suitable for both indoor and outdoor applications. The module is designed to be low power and long battery life, making it ideal for applications where energy efficiency is important.