1. USB TO RS232, USB TO RS485, USB TO TTL (UART)2. Adopt FT232RL, fast communicating, stable and reliable, better compatibility3. Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal4. Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption5. Onboard TVS ( ient Voltage Suppressor), effectively suppress surge voltage and ient spike voltage in the circuit, lightning-proof & anti-electrostatic 6. Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance7. Fully automatic ceiver circuit with no delay, ensures the USB port communicates with different interfaces fastly and stably, without interfering each other8. Onboard TTL serial 3.3V/5V voltage lator, config the TTL level via switch9. Aluminium alloy enclosure with sand blasting and anodic oxidation, CNC process opening, solid and durable10. 3 LEDs for indicating the power and ceiver status11. USB-B and RS232 connectors, smoothly plug/pullSpecifications:1. Product type: industrial optically isolated converter2. Baudrate: 300-921600bps3. Host port: USB4. Device port: RS485/RS232/TTL5. USB:(1). Operating voltage: 5V(2).Connector: USB-B(3). Protection: 200mA self-recovery fuse, isolated output(4). mission distance: ~5m5. RS485:(1). Connector: screw terminal(2). Pins: A+, B-, GND(3). Direction control: hardware automatic control(4). Protection: 600W lightning-proof and surge-suppress, 15KV ESD protection (reserved 120R balancing resistor solder pads)Colour:black+greenMaterial:Aluminum alloy Package Contents:1 x USB TO RS232/485/TTL Isolated Converter1 x USB Cable