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Sales (Mon - Fri 08:00 - 17:00 EEST)


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 25.00 USD per order.


Credit Cards, we accept Visa, MasterCard
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 - ver.1 USB 4 Relay - ver.2 USB 4 Relay with TCN75 sensor USB 8 Relay USB 16 Relay - ver.3 USB 16 Relay Modbus RTU
Device Image and link
Chipset FT245RL MCP2200 FT245RL FT245RL FT232RL, MCU FT232RL, MCU
Required external power supply No No No (12VDC or 24VDC) (12VDC or 24VDC) (12VDC or 24VDC)
Relays count 4 4 4 8 16 16
Temperature sensors 1
Control via Virtual Com Port
Communication protocol USB (via FT245RL library) USB (CDC,HID) USB (via FT245RL library) USB (via FT245RL library) Serial or USB (via FT232L library) ModBus RTU
Keeps relay states after disconnect from computer
Save relay states in EEPROM and load on boot
Option for boot with predefined relays states
Hardware Timers
Level of resistance against USB interference average high average high high high
Optical isolation (for relays only) (for communication only) (for communication only)
Box version available
Android application available
Ready for using Sofwtare
SDK (software examples available) (only for the relays)



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