This FT232 USB to TTL adapter with two isolation chips allows both signal and power to be isolated. Even when your external circuit is shorted or a large voltage is applied, it will not damage your USB port and thus protect your computer.
This USB to TTL UART isolation module can handle a variety of complex and harsh conditions.

Precautions:
This isolated USB to TTL adapter does not have 2 pins for RTS and CTS. So if you need to use these 2 pins, please do not buy this adapter.

Specification:
Model: SH-U09C3
Main chip: FTDI FT232RL
Isolation voltage: 1500VDC voltage isolation, with continuous short circuit protection
Pin Definition: RXD,TXD,GND,VCC,P30(P30 is only for STC MCU)
TTL Level: 3.3V or 5V
USB interface: 2.0
The maximum speed: 3Mbps

About indicator LED:
PWM LED:Power Indicator
RXD LED:The data transmission indicator flashes when there is data from the USB port.
TXD LED:The data receiving indicator flashes when the USB port receives data.

List of supported systems
1,Windows XP,7,8,10
2,Ubuntu 11.10, kernel 3.0.0-19 or above
3,Mac OS X 10.3 to 10.8 (32 &64 bit)
4,Mac OS X 10.9 and above(64 bit)
5,Windows CE 4.2-5.2 6.0/7.0 and Windows CE 2013
You can download the driver directly from FTDI's website

Works with software
HyperTerminal, TeraTerm, WinDBG, all open source serial software on Linux, etc.

Packing list:
1 X Isolated USB to TTL Adapter
1 X User Manual
1 X 4 PIN DuPont Cable

WARRANTY:
DSD TECH offers a 1-year warranty and lifetime technical support for this isolated USB-to-TTL adapter。If you meet any question, Please contact us, We will fix your issue within 24 hours.

Important Notes
This product uses FTDI FT232RL chip by default, because of the chip out of stock, some production batches use FTDI FT232RNL model chip . Please do not worry, FT232RNL is also the chip produced by FTDI, can completely replace FT232RL. If you still care about these please contact us.