Description
More Controller Options: FT232RNL Or CH343G
Industrial Isolated USB to RS232/485/TTL Converter
USB TO RS232/485/TTL
Stable Data Transmission | Multi-Device Compatibility | Multi-OS Support
- Original FT232RNL or CH343G chip inside, fast communication, stable and reliable, better compatibility
- Onboard unibody power isolation, provides stable isolated voltage, no extra power needed 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 suppresses surge voltage and transient spike voltage in the circuit, lightningproof & anti-ESD
- Onboard self-recovery fuse and protection diodes, ensures stable current/voltage output, provides over-current/over-voltage proof, improves shock resistance
- Fully automatic transceiver circuit with no delay, ensures fast and stable communication between USB port with different interfaces without interfering with each other
- Onboard TTL serial 3.3V/5V voltage translator, configures the TTL level via switch
- Aluminum alloy enclosure with sandblasting and anodic oxidation, CNC process, solid and durable
- 3 LEDs for indicating power and transceiver status
- High-quality USB-B and RS232 connectors, smoothly plug/unplug
FT232RNL Version
CH343G Version
Specifications
| PRODUCT TYPE | Industrial-grade digital isolated converter | |
|---|---|---|
| USB | Operating voltage | 5V |
| Connector | USB-B | |
| Protection | 200mA self-recovery fuse, isolated output | |
| RS232 | Connector | DB9 male |
| Protection | TVS diode, surge and ESD protection | |
| Transmission mode | Point-to-point | |
| Baudrate | FT232RNL: 300bps ~ 921600 bps CH343G: up to 600000 bps (not full band) |
|
| RS485 | Connector | Screw terminal |
| Pins | A+/B-/GND | |
| Direction control | Hardware automatic recognition and control of data transmission direction | |
| Protection | 600W lightningproof and surge suppression, 15KV ESD protection (onboard 120R balancing resistor reserved solder pads) | |
| Transmission mode | Point-to-multipoint (up to 32 nodes, repeaters are recommended for 16 nodes or more) | |
| Baudrate | FT232RNL: 300bps ~ 2 Mbps CH343G: up to 2 Mbps (not full band) |
|
| TTL (UART) | Operating voltage | 3.3V / 5V |
| Connector | Screw terminal | |
| Pins | TXD, RXD, GND, 5V | |
| Protection | Clamping diode, over-voltage/negative voltage protection, shock resistance | |
| Transmission mode | Point-to-point | |
| Baudrate | FT232RNL: 300 bps ~ 2 Mbps CH343G: up to 2 Mbps (not full band) |
|
| Indicators | PWR | Red power indicator, lights up when USB connection is detected and voltage is sensed |
| TXD | Green TX indicator, lights up when data is being sent from the USB port | |
| RXD | Blue RX indicator, lights up when data is being sent from the device ports | |
| Operating environment | Temperature | -15℃ ~ 70℃ |
| Humidity | 5%RH ~ 95%RH | |
| Operating system | Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7 | |
Original Industrial-Grade Chip
Onboard original FT232 or CH343 chip
Fast communication, stable and reliable, better compatibility
Safer Isolated Design
- Onboard unibody power isolation, provides stable isolated voltage, no extra power needed for the isolated terminal
- Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
Multi-Protocol & Multi-Type Conversion
USB TO RS232, RS485 or TTL(UART)
RS232, RS485 or TTL(UART) TO USB
* Only one of RS232, RS485 and TTL can be converted to USB at the same time; RS232, RS485 and TTL cannot be converted to each other
Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightningproof & anti-ESD. Onboard self-recovery fuse and protection diodes, ensures stable current/voltage output, provides over-current/over-voltage proof, improves shock resistance.
Supports Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7 and more.
Working Status Indicators
Onboard 3 LEDs for indicating power and transceiver status
Aluminum Alloy Enclosure
Aluminum alloy enclosure with sandblasting and anodic oxidation
Solid and durable, stylish and nice touch feel
Interfaces Introduction
Outline Dimensions
Resources & Services

WIKI: www.waveshare.com/wiki/USB_TO_RS232/485/TTL
WIKI: www.waveshare.com/wiki/USB_TO_RS232/485/TTL_(B)_
* Resources for different product versions may vary, please check the wiki page to confirm the actually provided resources.
