1 to 8 RS485 SPLITTER HUB: Industrial isolated 1 to 8 RS485 hubs with industrial-grade super anti-interference chips, surge protection, and static protection circuits. DURABLE TWO-WAY COMMUNICATION: RS232 RS485 RS422 fiber converter supports two-way communication, plug and play, no driver required, good heat dissipation, and stable performance. SUPPORTS 128 DEVICES: Supports up to 128 devices per channel and a high baud rate of 152.2 Kbps. INDUSTRIAL QUALITY: Utilizes industrial-grade components and a metal casing, capable of operating in a wide temperature range from -40°C to 75°C (-40°F to 167°F). Suitable for tough outdoor environments. WIDE APPLICATION: Serial device servers are commonly used in industrial systems, communication, transportation, education, finance, power, security, charging systems, etc. Item Type: RS232 RS485 RS422 Optical Modem Material: Iron Voltage: 100-240V Interface: RS232 RS485 RS422 Communication Distance: Approx. 1200m / 1312.3yd Communication Speed: 300-115200bps Number of Supported Nodes: 32 Load Capacity: Up to 128 devices per channel Transmission Medium: Parallel line/twisted pair Isolation Mode: Optoelectronic isolation of input and output Power Supply Voltage: DC9-48V 1 x RS232 RS485 RS422 Hub 1 x Adapter 1 x 2-position terminal block 2 x 8-position terminal block 1 x User Manual