Velleman k8090 8 channel usb relay card electronics kit
Velleman 8 channel usb relay card kit velleman k8090 with the velleman 8 channel usb relay card kit you can use your computer usb port to connect to the outside world the card has eight relay channels which are controlled by your computer it will allow you to connect a load of up to 16a on each of the high power relays the board has space for extra vdr noise suppressors and has push buttons for test operating all the relays each channel also has an led to indicate condition of relay the