TTL to RS485 and RS485 to Serial UART Adapter Function and purpose This adapter provides bidirectional conversion between TTL level signals and RS485 differential signaling, bridging TTLbased controllers with RS485 networks and enabling RS485 devices to connect to UART serial hosts. It is designed to support multiple communication scenarios where different protocols need to interoperate, making it a practical tool for integrating diverse devices in a single project. Power supply compatibility Compatible with 3.3V and 5.0V power supplies, offering flexibility across a wide range of devices and applications. No extra power conversion is required for typical 3.3V or 5V systems, simplifying installation and use. Status indication Equipped with RXD (Receive) and TXD (Transmit) indicator lights to provide visual confirmation of data activity. The indicator helps you monitor send and receive status at a glance, aiding dependable and efficient data transmission. Multidevice communication Supports multimachine communication on a single RS485 bus, with the ability to connect up to 128 devices. This makes it suitable for large scale industrial and commercial applications where many devices need to communicate simultaneously. Use scenarios Industrial automation: connect PLCs and field sensors on an RS485 network to a UARTenabled controller or gateway for centralized monitoring and control. Building automation and data collection: link multiple RS485enabled controllers, meters, or actuators to a single UART host for streamlined data gathering and management. Prototyping and development: test RS485 networks with TTLbased microcontrollers and UART interfaces, enabling rapid experimentation without separate network hardware.