Manuals
----------------------------------------------------------------- Relay boards -----------------------------------------------------------------------
![](http://sigma-shop.com/userfiles/productthumbs/thumb_223.jpg)
- USB Relay Controller - One Channel.html ![](/userfiles/editor/image/html_icon.gif)
- USB Relay Controller - One Channel.pdf ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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![](http://sigma-shop.com/userfiles/productthumbs/thumb_236.jpg)
- Eight Channel USB Relay Controller - RS232 Serial controlled - 12V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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![](http://www.sigma-shop.com/userfiles/productthumbs/thumb_160.jpg)
- RS232 Serial COM controlled Eight Channel Relay Board - 12V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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![](http://www.sigma-shop.com/userfiles/productthumbs/thumb_166.jpg)
Two Relay board 5V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
Two Relay board 12V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
Two Relay board 24V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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Four Relay board 5V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
Four Relay board 12V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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![](http://www.sigma-shop.com/userfiles/productthumbs/thumb_164.jpg)
Eight Relay board 5V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
Eight Relay board 12V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
Eight Relay board 24V ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
-------------------------------------------------------------- RS485 Relay boards --------------------------------------------------------------------
![](http://www.sigma-shop.com/userfiles/productthumbs/thumb_154.jpg)
USB to RS485 FTDI interface Board ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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![](http://www.sigma-shop.com/userfiles/productthumbs/thumb_194.jpg)
RS485 8 Channel Relay Board, RS485 ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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![]( http://www.sigma-shop.com/userfiles/productthumbs/thumb_204.jpg)
RS485 to 8 Digitally Outputs controller ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
-------------------------------------------------------------- Programmers --------------------------------------------------------------------
![](http://www.sigma-shop.com/userfiles/productthumbs/thumb_203.jpg)
USB KEEProg E-Eprom programmer ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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![](http://www.sigma-shop.com/userfiles/productthumbs/thumb_178.jpg)
USB 24xxx I2C E-Eprom programmer ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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![](http://www.sigma-shop.com/userfiles/productthumbs/thumb_178.jpg)
USB 25xxx SPI Bus E-Eprom programmer ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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![](http://sigma-shop.com/userfiles/productthumbs/thumb_250.jpg)
WEB, Internet , Ethernet controlled relay board: Arduino compatible, RS485, USB ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
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- RS232 serial 8 Digital Channel Output Modul ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
- USB to serial UART FTDI interface Board ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)
- USB Relays Software exsamples ![](http://sigma-shop.com/userfiles/editor/image/pdf.gif)