The USB to RS485 converter with onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
The USB to RS422 converter with onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
Onboard 120R terminal resistor on the RS485/RS422 ports, enable by default, configurable by jumper
Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
Industrial rail-mount ABS case design, small in size, easy to install, and cost-effective