High quality brand new The USB TO RS232/485/TTL is very easy to use fully automatic transceiving without delay. Due to its fast communication stability reliability and safety it is an ideal choice for industrial control equipments and/or applications with high communication requirement.Fully automatic transceiver circuit with no delay ensures the USB port communicates with different interfaces fastly and stably without interfering each otherThis is an industrial USB to RS232/485/TTL isolated converter with original FT232RL inside. It features embedded protection circuits such as power isolation ADI magnetical isolation and TVS diode etc. What's more the USB TO RS232/485/TTL comes with an aluminium alloy enclosure make it solid and durable to work.Onboard unibody power supply isolation provides stable isolated voltage needs no extra power supply for the isolated terminalHigh quality USB-B and RS232 connectors smoothly plug/pull