https://www.pcs-electronics.com/product ... tter-kits/
and here is the manual for new updated V3:
http://www.pcs-electronics.com/software ... 5V3_en.pdf
and the old version V1:
http://www.pcs-electronics.com/software ... 015_en.pdf
Here's a program to control this unit remotely with a PC (RS232 or USB):
http://www.pcs-electronics.com/software ... _Setup.EXE
Here is the driver for USB port for XP, W2K, Vista and Windows7:
http://www.pcs-electronics.com/software ... driver.zip
This lets you use the USB communication with transmitter board.
Here is the driver for USB port for XP, Vista and Windows7 that should work in 64 as well:
http://www.pcs-electronics.com/software ... omPort.exe
and of course the photo:

Release firmware version is:
2015+ v1.0 07/14
Last firmware version is:
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Note this product is also available in a COMBO package with stereo encoder, RDS encoder, IO board and LCD.
Please report any bugs you find.