• Description
  • Technical Data
  • Documentation
  • Available accessories

The QUANCOM® USBREL4 is a professional output module with 4 SPST relays which are able to switch loads up to 1A / 15W. This module consits of a small case with a 9 pin D-SUB female header and a 1m USB cable attached to it. All relay contacts are conducted to the 9 pin D-SUB female header, so that it is very easy to connect external circuits by using a KAB-DSUB-9 9 pin D-SUB cable. You can use the module as dekstop device, in the laboratory environment, as mobile equipment connected to a Notebook.

The state of both relays is visualized through the onboard LEDs. The configuration LED shows that the module has power and if it is initialized by the driver. Up to 4 modules can be used at the same time in the same system by setting a unique module address using the onbaord jumpers to identify each module from software side.

Additional Informations
 Connection examples for optocouplers and relays

The USBREL4 board is supported by QLIB (QUANCOM Driver Library) which makes it easy to program under Windows 7, Vista, XP, 2000, 98, Agilent Vee and LabView. We implemented a command set which is usable for all operating systems. An application generated for Windows 98 can be used directly on a Windows XP PC. You don't need any experience in driver development to program this device.

This USB module is also available as USBOPTOREL16 with 16 gav. isolated optocoupler inputs and 16 relays or as the low cost version USBREL8LC without ouput LEDs and pluggable connector.

•General I/O
USB 2.0 Interface
Access Time: 1ms
Dimensions: Incl. Case 135*77*50 mm

Power Supply: 5V USB

Quantity: 2 Switch-On Relays (DIL Reed)
Switching Current: max 1A
Switching Capacity: max 15W
Switching Voltage: max 30V
Switching Time: 1 ms


•Temperature Range
0...50 °C

Manual for USBIN8, USBREL2 and USBREL4
PDF Manual
[Download 1.8MB]

Top-Hat Rail

USB 4-port switch for max. 12Mbit - switchable to 1,5Mbit

USB 7-port switch for 12MBit - switchable to 1,5MBit USB

Industrial USB 7-port switch for 12Mbit - switchable to 1,5Mbit USB

USB active extension cable 5.0 m

  Add to cart
97.38 Euro
(incl. Taxes)

Operating Systems
Windows 10/8/7 (32/64)
Windows Vista (32/64)
Windows XP (32/64)
Windows 2000
Win Server 2008/2012 (32/64)
Win 2003 Server (32/64)
Win 2000 Server
Windows 95/98/Me
Similar Products

Ethernet Interface
64 relay (1A)
Tough Metal Case

USB Interface
64 relay (1A)
Tough Metal Case

USB Interface
8 relay (1A)
Open Top Hat Rail Case

... back to home

Updated on 5.7.2020 by Michael Reimer