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 (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, -proof & anti-electrostatic6. Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance7. Fully automatic transceiver 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 translator, 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 transceiver status11. High quality 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). Transmission distance: ~5m5. RS485:(1). Connector: screw terminal(2). Pins: A+, B-, GND(3). Direction control: hardware automatic control(4). Protection: 600W -proof and surge-suppress, 15KV ESD protection (reserved 120R balancing resistor solder pads)Colour:black+greenMaterial:Aluminum alloyPackage Contents:1 x USB TO RS232/485/TTL Isolated Converter1 x USB CableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.