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The MWE485-H4 is a DIN- rail serial port isolation hub converter that supports bidirectional transparent conversion between one RS232/485 master station and 4 RS485 slave stations .It can improv e the RS485 bus structure, increas e the load capacity and transmission distance of RS485. It suppor ts DC5V or DC9-30V power input and standard DIN – rail installation method to meet the needs of various industr y . It p rovide s a RS-485 star connection mode, which can bring great convenience to network layout. The fanless and low-power hardware design supports a wide temperature range of -40 ℃ to+85 ℃, suitable for various harsh industrial environments. It can be widely used in indoor and outdoor serial field-bus systems.