Features: Industrial USB to RS232/485/TTL isolated converter with original CH343G chip; Adopt original CH343G, fast communicating, stable and reliable, better compatibility; Onboard unibody power supply isolation, provides stable isolated voltage, need no other power supply for the isolated terminals; Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption; Onboard TVS (Transient Voltage Suppressor), effectively suppress voltage and transient voltage in the circuit, Thunder proof & anti-electrostatic; Specifications: Material:ABS Color:Black Size:Approx.7.16x8.65cm/2.82x3.41in Package Includes: 1x USB to RS232/485/TTL Isolated Converter note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.