eBay

Features:

When the board is connected to the PC and the PC is restarted, the relays will be toggled several times. This is because of the structure of the FTDI chip.
The device must be supplied with 12 VDC to work.
Extra PCB openings for better voltage isolation.
Doubled high current tracks.
There is no protection against reversed voltage! If the VCC(+12V) and GND are reversed the board will be damaged.
The board can not work without computer.

Specifications:

Relay: 10A 250VAC/10A 125VAC/10A 30VDC /10A 28VDC
Power Supply: 12VDC
Current Consumption: 300mA
Size: 93*70*16mm/3.66*2.75*0.63"
Software Examples: VB6, BCB6, Java (netbeans), VB.NET 2010 Express, C++.NET 2010 Express
PCB: FR4/1.5mm/two layers/metalized holes/HAL/white stamp/solder mask

Package Includes:

1x 8-channel 12V USB Relay Board

1. Our listing price includes the value of goods,packaging cost,and export taxes,not including international duties.
2. duties,taxes,and charges are not included in the item price or shipping fee.
3. The duties are buyers' responsibility.Please check with your country's customs office determine what these additional costs will be prior to your purchase.
4. All disputes arising from the duties will be submitted to ebay for solution.

1. Any questions, pls. contact us via ebay message or email us.We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. post a message again because sometimes our message system may block some emails.

2. If you are satisfied with our service, pls. kindly leave us a positive feedback and give us the Detailed Seller Rating with all "5 " in very area
3. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy.

We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.

https://image-us.chengykj.com/upload/third_resource/image/shipc73.jpg