Features:
Adopt original FT232RNL chip, fast communicating, stable and reliable, better compatibility.
Supports multiple communication interface conversion, USB to RS232, USB to RS485, USB to RS422, USB to TTL.
Onboard unibody power supply isolation, provides stable isolated voltage, needs no 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 the USB port communicates with different interfaces fastly and stably, without interfering with each other
Onboard TTL serial 3.3V and 5V voltage translator, config the TTL level via switch
3 LEDs for indicating the power and transceiver status
High quality USB-B and RS232 connectors, smoothly plug/pull
Industrial grade metal case, supports wall-mount and rail-mount installations, solid and beautiful, easy to install

Specifications:
USB Operating voltage: 5V
USB Connector: USB-B
Protection: 200mA self-recovery fuse, isolated output
RS232 Connector: DB9 male
RS232 Protection: TVS diode, surge protection & ESD protection
RS232 Transmission mode: Point-to-point
RS232 Baud rate: 300bps ~ 921600bps
RS485/422 Connector: Screw terminal
RS485/422 Direction control: Hardware automatic control
RS485/422 Protection: 600W lightningproof and surge-suppress, 15KV ESD protection (reserved two 120R balancing resistors, enabled/disabled via jumper)
RS485/422 Transmission mode: Point-to-multipoints (485 mode: up to 32 nodes, it is recommended to use repeaters for 16 nodes or more, 422 mode: up to 256 nodes, it is recommended to use repeaters for 16 nodes or more)
RS485/422 Baud rate: 300bps ~ 2Mbps
TTL (UART) Operating voltage: 3.3V / 5V
TTL (UART) Connector: Screw terminal
TTL (UART) Pins: TXD, RXD, GND, 5V/3.3V
TTL (UART) Protection: clamp protection diode, over-voltage/negative-voltage proof, shock proof
TTL (UART) Transmission mode: Point-to-point
TTL (UART) Baud rate: 300bps ~ 2Mbps
PWR Red power indicator, light up when there is USB connection and voltage is detected
TXD: TX indicator, light up when the USB port sends data
RXD: RX indicator, light up when the device ports send data back
Temperature: -15℃ ~ 70℃
OPERATING SYSTEM for Mac, for Linux, for Android, for Windows 11 / 10 / 8.1 / 8 / 7

Package includes:
1* USB TO RS2321485/422/TTL Adapter
1* USB Cable
1* Buckle
1* Screwdriver

If there is any questions, just contact us, we will alway be here for you.