SCM TTL to RS-485 Interface Module — Auto Direction Control

SCM TTL to RS-485 Interface Module — Auto Direction Control

The SCM TTL to RS-485 module features automatic direction control — no DE/RE control pin required. The module automatically switches between transmit and receive mode based on the UART data flow, simplifying RS-485 implementation in Arduino projects. Simply connect TX and RX — no additional GPIO pin needed for direction control.

Key Features

• ✅ Automatic direction control — no DE/RE pin needed, TX/RX only
• ✅ Simplified wiring — connect like a standard UART module
• ✅ 2.5Mbps data rate — high-speed RS-485 communication
• ✅ Up to 1200m range — long-distance industrial communication
• ✅ 5V supply — direct Arduino connection
• ✅ RoHS compliant

Key Specifications

• Conversion: TTL UART ↔ RS-485 | Direction: Automatic
• Speed: up to 2.5Mbps | Range: up to 1200m
• Supply: 5V

Typical Applications

• Arduino Modbus RTU without direction control pin
• Simplified RS-485 industrial sensor network
• RS-485 communication for resource-constrained MCUs
• Building automation RS-485 bus

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