[USB-033] 4 Channel RS232C/USB Converter (Independent Isolation Type)
USB to RS232C Converter ISOLATED
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Overview
USB-033 is a 4 channel USB to RS-232C converter that isolated with 2500VDC between each RS-232C serial port and a USB port. You can use 4 channels of RS232C serial port from a USB port. Those 4 channels are isolated independently from a USB side.
It supports High Speed baud rates of up to 1Mbps. This is designed around the high performance industry proven FTDI chipset. USB-033 is Non-use of 10 Restricted substances of RoHS directive.

Features
- Supports RS232C
- 2500VDC bus isolation
- Baud rate up to 1Mbps
- Supports custom baud rate
- Auto transmit data control
Built-in USB-serial chip has auto transmit controller and the driver is activated when it transmit the data - No external power supply is required
USB-033 is powered through a USB port (Bus-powered) - ESD and surge protection
- Housing material: Plastic
- DIN rail and screw mountable (Attachment is required)
- Includes a USB cable (1.8m)
- Non-use of 10 Restricted substances of RoHS directive
- MADE IN JAPAN
Specification
| Item | Description | Remarks |
|---|---|---|
| Model | USB-033 | |
| Input Power | DC 5V / Less than 450mA Supplied through a USB port |
No external power supply required |
| HOST Interface | USB 2.0 compliant (Support Hi Speed) | USB 1.1 compatible ESD protection |
| HOST Connector | Standard Type mini-B Female | |
| Processor | FT4232H | FTDI |
| Isolation Method | Bus Isolation | |
| Isolation Protection | 2500VDC | Designed value |
| I/O Interface | RS232C | ESD protection |
| Number of RS232C Port | 4 | |
| RS232C Connector | D-SUB 9pin Male (#4-40 UNC) | |
| Communication Method | Asynchronous Serial Communication |
|
| Baud Rate | 300 bps to 1 Mbps | Support custom baud rate |
| Data Bits | 7 or 8 bit | |
| Stop Bits | 1 or 2 bit | |
| Parity | Even, Odd or No-parity | |
| FIFO RX Buffer Size | 2048 bytes/ch | |
| FIFO TX Buffer Size | 2048 bytes/ch | |
| USB Driver | Virtual COM port driver | |
| Support OS | Windows 10/8.1/8/7/Vista/XP | |
| Operating Ambient Temperature | -20 to 60℃ (-4 to 140 °F) | No condensation permitted |
| Operating Ambient Humidity | 30 to 85%RH | No condensation permitted |
| Storage Ambient Temperature | -20 to 55℃ (-4 to 131 [°F]) | No condensation permitted |
| Storage Ambient Humidity | 30 to 85%RH | No condensation permitted |
| Weight | Approx. 300 [g] | Only main body |
| Dimensions | 165 x 80.5 x 39 [mm] (6.496" x 3.169" x 1.535") |
Without projections |
* Power saving function (suspend, standby, sleep and others) is not supported
RS232C Connector pinouts
| Pin No | Name | Direction | Notes |
|---|---|---|---|
| 1 | NC | - | Unused |
| 2 | RXD | IN | Receive data |
| 3 | TXD | OUT | Transmit data |
| 4 | NC | - | Unused |
| 5 | GND | - | Signal ground |
| 6 | NC | - | Unused |
| 7 | RTS | OUT | Request to send |
| 8 | CTS | IN | Clear to send |
| 9 | (5V) | - | Optional 5V |
| CASE | FG | - | Connected to GND |
Package Contents
- USB-033
- USB mini-B cable 1.0 [m]
- Driver & Application CD
Documentation
Price and Optional Accessories
| Description | MODEL | Image | List Price (JPY) | Stock Status |
|---|---|---|---|---|
| 4 Channel RS232C/USB Converter (Independent Isolation Type) |
USB-033 | ![]() |
||
| Attachment for vertical direction |
ACC-027 | ![]() |
||
| Attachment for horizontal direction |
ACC-028 | ![]() |
||
| Attachment for DIN rail type B |
ACC-031 | ![]() |
||
| Neodymium magnet set |
ACC-036 | ![]() |
||
| D-sub 9pin - TB Adapter with FG Terminal |
ACC-045 | ![]() |


User's manual, Outline Drawing, etc







