Feature:1. Input Signal: 4 input ports, supports up to 115,200bps, selectable auto manual switching by external switch, selectable primary secondary input by external switch.2. Safe Operation: The marine serial line splitter supports over voltage protection, over current and surge voltage protection, reverse input and over current protection.3. Practical: There are wiring instructions at the wiring area to prevent wiring errors, and pluggable screw terminals for quick and easy installation and diagnostics.4. Design: Galvanic isolation of Each output group, input, main circuits and power, selectable RS232, RS422, TTL on 8 output port.5. Durable Material: Made of aluminium alloy shell, anti rust treatment, will not be oxidized and corroded by seawater or air, long term durability.Specification:Item Type: Marine Serial Line SplitterMaterial: Aluminium alloyInput Signal: 4 input ports, galvanic isolation, supports up to 115,200bps, selectable auto manual switching by external switch, selectable primary secondary input by external switch8 Way Output Ports: Support RS232/RS422/ TTL Signal(Selectable by jumper)Input Port: Over Voltage Protection(DC 36V 1 min)Output Port: Over Current and Surge Voltage ProtectionInput Power: Reverse Input and Over Current ProtectionInput Power: DC 24V (DC 18~32V), 0.5AElectronic Fuse, No Replacement Required Temperature: -0.5C ~ +55C(-59~131)Humidity: 95%.Package List:1 xMarine Serial Line Splitter