Industrial USB To 4-Ch Isolated TTL-Serial Converter

• Fast communicating, stable and reliable, better compatibility 
• Supports USB to 4-ch multi-functional serial port, convenient for expanding or debugging various industrial serial port devices
• Supports USB to 4-ch isolated TTL, TTL power level is automatically adapted to extra power supply for the isolated terminal
• Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
• Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & ESD protection 
• Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance 
• Fully automatic transceiver circuit with no delay, ensures fast and stable communication between the USB port and different interfaces, without interfering with each other
• High quality USB-B or C connectors, smoothly plug/pull Industrial grade metal case, supports wall-mount installation, solid and beautiful, easy to install

Interface:

• 1  USB ( Type B or C, only one be used at the same time)
• 4 x TTL Serial Ports ( Label: G-GND  R-Rx, T-TX, V- extern Voltage)