UART TTL Turn to RS485
The UART TTL to RS485 Converter Module is a compact communication interface designed to convert standard TTL serial signals from microcontrollers into RS485 differential signals for reliable long-distance data transmission. Compatible with both 3.3V and 5V systems, it supports half-duplex communication and allows up to 128 devices on the same RS485 bus. The module includes lightning protection, anti-interference design, onboard RXD/TXD status LEDs, and a 120Ω termination resistor for improved signal integrity. Its industrial-grade design, wide operating temperature range, and long transmission capability make it ideal for automation, control systems, and remote communication applications.
وحدة تحويل UART TTL إلى RS485 هي واجهة اتصال مدمجة مصممة لتحويل إشارات UART TTL الخاصة بالمتحكمات الدقيقة إلى إشارات RS485 التفاضلية المخصصة للاتصالات بعيدة المدى. تدعم العمل مع أنظمة 3.3 فولت و5 فولت وتوفر اتصالًا نصف مزدوج (Half Duplex) مع إمكانية توصيل ما يصل إلى 128 جهازًا على نفس الشبكة. تحتوي على حماية من الصواعق والتشويش الكهرومغناطيسي ومؤشرات LED للإرسال والاستقبال ومقاومة إنهاء 120 أوم لتحسين جودة الإشارة. تعد مناسبة لأنظمة الأتمتة الصناعية، وشبكات التحكم، ومشاريع الاتصالات طويلة المسافة.
The UART TTL to RS485 Converter Module enables seamless communication between microcontrollers and RS485 networks by converting standard TTL serial signals into industrial RS485 differential signals. It is designed for applications requiring stable, long-distance communication in electrically noisy environments.
The module supports both 3.3V and 5V logic levels, making it compatible with a wide range of microcontrollers, including Arduino, STM32, ESP32, PIC, AVR, and other embedded systems. Its advanced anti-interference and lightning protection circuitry improve communication reliability, especially in industrial and outdoor installations.
A built-in 120Ω termination resistor can be enabled for long-distance transmission lines, helping maintain signal integrity. The module supports half-duplex communication and allows up to 128 nodes to communicate on a single RS485 bus. Integrated RXD and TXD LEDs provide visual monitoring of data transmission and reception.
The compact semi-hole PCB design allows easy integration into custom hardware projects while maintaining excellent electrical performance through extensive ground copper areas.
Specifications
| Parameter | Value |
|---|---|
| Product Type | UART TTL to RS485 Converter Module |
| Communication Standard | RS485 |
| Communication Mode | Half Duplex |
| Logic Voltage Compatibility | 3.3V and 5V |
| Power Supply Compatibility | 3.3V / 5V |
| Maximum Devices on Bus | 128 Nodes |
| Transmission Distance | Up to 1000m (Recommended ≤ 800m) |
| Termination Resistor | 120Ω Onboard |
| Protection Features | Lightning Protection, Anti-Interference |
| Status Indicators | RXD LED, TXD LED |
| Operating Temperature | -40°C to +85°C |
| PCB Thickness | 0.8mm |
| Pin Pitch | 2.54mm |
| Hot Swap Support | Yes |
Applications
- Industrial automation systems
- PLC communication networks
- Building automation systems
- Smart energy monitoring systems
- Long-distance sensor communication
- Remote data acquisition systems
- Embedded and microcontroller projects
- RS485 network development
- Environmental monitoring stations
- Security and access control systems
- Smart agriculture and irrigation control
- Modbus RTU communication networks