USB watchdog stick with 2 relays for shift operations

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Availability: In Stock SKU: USB-WATCHDOG-STICK Categories: ,

This USB-WATCHDOG-STICK monitors your operating PC or server and can reset the hardware independently in case of a program crash. Simply integrate the function of the Watchdog Stick into your application. As soon as a timeout occurs and the watchdog stick is no longer periodically reset, the two relay outputs are switched through. With an appropriate connection cabling, for example, the PC reset could be activated, an external SMS modem can send warnings or a connected siren signals an alarm. With the help of our free configuration tool, you can define how the relays should switch in case of an error.

  • USB 2.0 / USB 1.1 interface
  • Watchdog function
  • Monitoring your control PC or server
  • Timeout times adjustable from 10ms to 10h
  • Windows Watchdog API
  • 2 NO contact relay (NO)
  • Connection cable with DSUB9 socket (approx. 1.8m)

Relay outputs

This product uses signal relays with normally open (NO) function. They are suitable for smaller switching capacities and achieve well over 5 million switching cycles. The galvanic isolation between input and output circuit is up to 1.0kV.

Software and control

Our DELIB driver library, which is included with the product, makes it easy to address the product via our API.


We offer support for the following programming languages:

  • C
  • C++
  • C#
  • VB
  • VBA
  • VB.Net
  • Java
  • Delphi
  • LabVIEW

We offer support for the following operating systems:

  • Windows 10 (32bit/64bit)
  • Windows 8/8.1 (32bit/64bit)
  • Windows 7 (32bit/64bit)
  • Windows Vista (32bit/64bit)
  • Windows XP (32bit/64bit)
  • Windows Server 2003 (32bit/64bit)
  • Windows 2000
  • Linux

Corresponding programming examples can be found in the “Software” section of the products or are included on the driver CD.


Supply voltage +5V (is supplied via the USB bus)
Interface USB 2.0 / USB 1.1
Power consumption max. 100mA
LEDs Signals access to the USB stick
Connection cable approx. 1,8m at 9 pin D-Sub socket
Operating temperature +10°C…+50°C
Dimensions 84.5 x 21 x 12.5/9.5 mm (without cable)
Relay outputs
Relay up to 1A • Typ: G6L1P5DC
• Property: 2 NO contacts (NO)
• Max. Switching voltage: 36V AC / DC
• Max. Switching current: 1 A AC / DC
• Max. Switching capacity: 24 W
• Galvanic isolation between contact and coil: 1.0 kV RMS /1 min
• Mechanical life: up to 5 million switching cycles

Additional information

Weight 0,102 kg




Overview screen of the ICT tool with all functions. These are described in more detail in the following chapters

General information on the ICT tool

We have developed the new ICT tool to make commissioning our products as easy and straightforward as possible.
This tool combines all the important functions of our old programs, such as the Configuration Utility, Module Demo and DT-Flasher, in one.
With the ICT tool, you can now easily configure, test, diagnose, flash and debug our products.
In the following chapters, we would like to introduce you to our new all-in-one software in more detail.

Module selection

Here you can integrate your modules into the ICT tool by clicking on the “+” symbol, so that you can then configure or test them.

ICT-Tool module selection. Display of the ICT-Tool at program start

Start screen

Here you can find some important information about your selected module.
In addition, you can display the manual of the module as PDF or HTML version here.
Under “Show module IDs” you can call up all available module IDs. This ID is needed to integrate our products into your software projects.

ICT-Tool module info. Display of the ICT tool when the module is open

ICT Treeview

In the treeview on the left side of the program window, you can see the respective forms that are supported by your module.
With a click you can then display this form in the right part of the program and perform possible configurations or tests.

ICT-Tool Treeview. Presentation of the ICT tool, explanation of the structure


Configuration program for USB watchdog stick



With the ICT-Tool the USB-Watchdog-Stick can be configured according to your needs. Define yourself, in which way the two relay outputs should be switched before, during and after a timeout. Thus an individual monitoring of your control PC can be realized.



This example shows by means of the two relay outputs how the function of the watchdog stick could be configured.

Condition: Relais 1 Relais 2
Deactivated (Monitoring not active) OFF = Relay contacts open ON = Relaiskontakte closed
Activated (Monitoring active) OFF = Relay contacts open OFF = Relay contacts open
Retriggered (Watchdog time is
OFF = Relay contacts open OFF = Relay contacts open
Timeout (Watchdog time was not
ON = Relay contacts closed ON = Relay contacts closed
Relais Setting after x msec
(Time-delayed switching of the relays after a
a timeout)
OFF = Relay contacts open ON = Relay contacts closed

Relay 1 switches on after a timeout and switches off again after time x has elapsed. This can be used as an external signal output, for example.

Relay 2 is connected to the reset switch of the PC to be monitored. After the timeout time has elapsed, it switches on x for a certain time and thus restarts the PC..

Timeout time and switch-on delay of the relays can be set freely.

  • Configuration tool for the USB watchdog stick
  • Intuitively operable
  • Included free of charge with the USB Watchdog Stick
ICT-Tool Watchdog

Hard- and Software-description

Watchdog retrigger tool
This program retriggers the watchdog in the background.

If the computer does not provide any more feedback, the watchdog activates.


DEDITEC Driver CD with many helpful tools and manuals for commissioning your DEDITEC products.

  • DELIB driver library for Windows
  • Test and configuration software
  • Manuals
  • Data sheets
  • Example programs for C++, C#, VB, VB.Net, Delphi, LabVIEW

24-pole ATX-extension cable for the USB-WATCHDOG-STICK

Through the connection of the ATX-extention cord it will be possible to use the „PS_ON#“ connection of the power supply without any interventions in the existing voltage supply cable. Through two single wires this connection can be switched.

  • Quick and uncomplicated assembly
  • 45cm wire with two single wires for the PS_ON# connection

Bracket for USB-WATCHDOG products

With the help of this slot bracket, you can conveniently relocate the two relay outputs of the USB watchdog stick into the interior of your PC. The customer’s wiring can then be carried out via corresponding luster terminals.


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5 years
Delivery availability

We offer at least 5 years delivery availability for our products.
Our experience shows that it is even about 10 years.


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Since its foundation in 2008, Dipl. Ing. Jürgen Siebert has been the managing director of DEDITEC GmbH. He will also be happy to advise you personally.

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