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Registered mail (Posts), table based cost.
DHL Express service, fixed cost at 42.00 USD per order.
GLS, fixed cost at 32.50 USD per order.
DPD, fixed cost at 22.00 USD per order.


Credit Cards, we accept Visa, MasterCard, Maestro
Paypal, you can place the order directly via our web shop
Wire transfer, please contact with us for Proforma-Invoice

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For EU Customers

All prices are WITHOUT VAT 20.00%

If you are located in EU and your company has valid VAT number we will reduce the VAT charge AFTER you make the order as our site does not support online VAT number validation. We do it as partial refund. You can use this online tool for VAT validation:

Comparison between USB Relay Boards

Parameter USB 4 Relay USB 4 Relay - ver.2 USB 8 Relay USB 16 Relay - ver.3
Required external power supply No No 12VDC or 24VDC 12VDC or 24VDC
Relay count 4 4 8 16
Control via Virtual Com Port
Communication protocol USB (via FT245RL library) USB (CDC,HID) USB (via FT245RL library) Serial or USB (via FT232L library)
Keeps relay states after disconnect from computer
Toogling relays during USB cable removal / PC restart no no Relays No 1,3,5 no
Level of resistance against USB interference low high low high
Box version available



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