WS603 Weather Instrument
This is a relatively inexpensive complete weather station from AAG.
The device is DS2670-based, with a unique pinout 
TAI603B is a cp210x DS2480B-based bus master
The device itself has the following schematic (source)
The best write-up is from Les Arbes.
Bus Master
Modern Linux supports the TAI603Bdmesg output on plug in:
usb 1-1.4.1: new full speed USB device using ehci_hcd and address 23owfs will use the TAI603B as a standard serial device.
USB Serial support registered for cp210x
cp210x 1-1.4.1:1.0: cp210x converter detected
usb 1-1.4.1: reset full speed USB device using ehci_hcd and address 23
usb 1-1.4.1: cp210x converter now attached to ttyUSB1
usbcore: registered new interface driver cp210x
cp210x: v0.09:Silicon Labs CP210x RS232 serial adaptor driver
In this case start owserver like this:
/opt/owfs/bin/owserver -d /dev/ttyUSB1
Device
The weather station appears as a DS2760 (family code 30).$ owdir
/30.978E03000000
/bus.0
/uncached
/settings
/system
/statistics
/structure
Properties:
- Temperature
$ owread /30.978E03000000/temperature
41.25 - wind
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