The Industrial Grade RS485 Repeater is a high-performance, photoelectric isolation communication module designed to extend RS485 signal transmission over long distances. Compliant with the EIA/TIA RS485 standard, it supports asynchronous half-duplex, two-way communication and fully transparent data transmission. This RS485 isolator is ideal for demanding industrial communication environments where signal stability, safety, and reliability are essential for a robust MODBUS RTU signal booster setup. Key Features Extended Communication Range: Amplifies RS485 signals up to 1200 meters at 9600bps, acting as a reliable RS485 repeater. High Capacity: Supports up to 128 RS485 devices, with a single repeater supporting up to 32 nodes (≤10m between nodes) for complex industrial communication networks. Photoelectric Isolation: 1500V isolation voltage protects devices from ground loop and common-mode interference in any RS485 isolator application. Built-in Protection: Includes TVS surge protection, self-recovery fuse, reverse power protection, and industrial-grade anti-interference circuitry for this MODBUS RTU signal booster. Auto Data Direction Sensing: No delay in signal transmission or reception, enhancing the efficiency of your DIN rail RS485 hub. LED Indicators: RXD/TXD and power status indicators for real-time industrial communication monitoring. DIN Rail Mounting: Standard 35mm rail mount for easy integration as a DIN rail RS485 hub into industrial control panels. Connection Modes Single Repeater Mode Point-to-Point: Connect one 485 output device and extend the distance to 1200m using an RS485 repeater. Point-to-Multipoint: Connect up to 32 devices with ≤10m spacing; total bus length remains 1200m for MODBUS RTU signal booster use. Parallel Repeater Mode Connect up to 16 repeaters to a single RS485 input to expand the number of connected devices (up to 128) as a DIN rail RS485 hub. Cascade (Tree Topology) Mode Extend communication distances indefinitely through cascaded RS485 isolator units while maintaining support for 128 devices in industrial communication. Applications Ideal for industrial communication systems requiring long-distance, interference-resistant data transmission through an RS485 repeater: Industrial automation with RS485 isolator PLC systems and MODBUS RTU signal booster Security monitoring Power grid data acquisition Building intercom systems Access control and parking systems Highway toll collection MODBUS networks using a DIN rail RS485 hub Specifications Parameter Description for RS485 Repeater Interface Standard RS485 (EIA/TIA compliant) RS485 isolator Baud Rate 0–115200bps (auto-adaptive) MODBUS RTU signal booster Protocol Transparent (not protocol-restricted) Max Transmission Distance 1200m per repeater (@ 9600bps) Node Support Up to 128 devices total / 32 per repeater node Working Voltage DC 9V–24V (reverse protection included) Power Consumption 0.6W (static) Isolation Voltage 1500V (photoelectric) Working Temperature -20°C ~ +70°C industrial communication Storage Temperature -40°C ~ +85°C Humidity 5% ~ 95% (non-condensing) Transmission Medium Twisted pair / shielded cable Mounting Method 35mm DIN rail RS485 hub Dimensions (L×W×H) 109 × 60 × 33mm (4.29 × 2.36 × 1.30 inches) Port Description Port Label Description of RS485 Repeater Input A+ / B- RS485 input (positive/negative) RS485 isolator GND RS485 input ground Indicators RXD Data receive indicator TXD Data transmit indicator PWR Power status indicator Output A+ / B- RS485 output (positive/negative) MODBUS RTU signal booster GND RS485 output ground Power 24V+ / GND DC 24V power input DIN rail RS485 hub DC Socket DC-005 12V/1A (5.5/2.1mm power adapter) Package Includes 1 × Industrial Grade RS485 Repeater
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