WDT284 Watchdog Timer Module

It is a fact of life that a computer, hardware device or program may fail. To reduce the risk and possible damage a failure can cause, there is two possible methods (1) redundancy (2) watchdog timer. Neither method offer 100% protection, but both reduce risk or consequences of failure. Redundancy, a duplication of hardware is very expensive. On the other hand the WDT284 offers excellent protection at a very low cost. The host computer or application must communicate with the WDT284 by sending a message over the USB port. If the communication does not occur within that programmed time frame, the WDT284 will trigger a relay to switch states based on the mode (mode 1 relay open, mode 2 relay closed) for a programmable amount of time, or if that time is zero, stay in the time-out occurred state. For the mode 2 module, the relay is closed when power is applied to the module. Mode 3 modules the relay is closed when the wdt is enabled. On model EXT the setup times are preset and external power is used. When the first reset pulse is received the watchdog timer function is enabled. The preset timess are 1 second for the reset time, and the relay stays open for 3 seconds, then closes (which is also the power on state). This model is used for applications where no setup is required and can cycle power on the same unit it is attached to. This relay event can be used to trigger a warning device, turn on/off critical hardware or perform a system reset. Do you have a hardware or software application that is critical to keep running at all times? Our Watchdog modules offer excellent protection against malfunctions at a low cost. Our products can be used to monitor your critical hardware and software functions (Software and Hardware) and if an error occurs, the card automatically generates outputs that can be used to initiate corrective actions, generate alarms, or reboot your computer.
Single unit cost starts at USD$ 67.5
WDT284 Watchdog Timer Module
* USB controlled watchdog timer
* Programmable event time-out
* Reset time programmable
* Relay output change on time out
* High-Speed USB 2.0 device, USB 1.1 compatible
* Type B USB connector high-retention design
* All needed power drawn from USB port, no external power required for card
* Custom 32 and 64 bit Microsoft Windows drivers provided
* Info for linux and other OS support under software tab
* SPST Relay ratings
AC Ratings 15A @ 125VAC 10A @ 250VAC
DC Ratings 10A @ 30VDC
Max Voltage 125VDC 250VAC
Contact Resistance: 200mOhm Max
Relay Closing Time: 10 milliseconds
Relay Releasing Time: 10 milliseconds
* Watchdog timer programmable from 100millisec to 60 minutes
* Reset time programmable from 100millisec to 10 seconds or left on
* Self Powered from USB (high power Hub)
*Operating Temperature: -20 to +70 C
*Storage Temperature: -40 to +105 C
*Humidity 5% to 90% RH, without condensation
Most of our customers write their own program for controlling our devices. With our provided API's you can use any programming language that supports DLL so you do not have to learn a whole new language. We provide two types of DLL api, first is the older standard DLL with both mangled calls and "C" calls. The second is the managed Class Library that supports all the new managed languages. Any programming language that supports calls to Windows DLL can also be used to control the cards. The software interface is easy to use from Visual Basic, Visual C# Visual C++ via a standard windows DLL with sample source included. Linux driver support CD available. Each module has an unique serial number string which allows multiple USB boards to be controlled by the host USB controller as individual USB devices. Click on blue tabs above to view other information about the module.
WDT284-01 USB WDT Mode 1 relay close on timeout Enter Qty
1-9 $67.5ea.
10- 49 $60.75ea.
50+ $55.25ea.
Add to Cart
WDT284-02 USB WDT Mode 2 relay open on timeout Enter Qty
1-9 $67.5ea.
10- 49 $60.75ea.
50+ $55.25ea.
Add to Cart
WDT284-03 USB WDT Mode 3 relay closed on enable Enter Qty
1-9 $67.5ea.
10- 49 $60.75ea.
50+ $55.25ea.
Add to Cart
WDT284-EXT USB WDT Mode 3 relay with external power input and presets Enter Qty
1-9 $72.5ea.
10- 49 $65.75ea.
50+ $57.25ea.
Add to Cart
WDT284-Linux Linux Support Disk (one time purchase) Enter Qty
1-9 $30ea.
10- 49 $30ea.
50+ $30ea.
Add to Cart
*Open Connector pdf file (printable)
*Open Mechanical pdf file (printable)
*Open Interface pdf file (printable)
*Open Interface pdf file (printable)
Software Downloads
*Download Uses WDT205 Software Complete CD ver 2.05 (zip file)
Labview Support
*Download Using Labview (pdf file)
Non-Windows OS Support (Linux and others)
*Download Using non-windows OS (pdf file)
Important readme about using dll with versions of windows .net Readme pdf
On some installations of Windows 7 and Windows 8 that are not configured to search the CD for drivers, it may show driver
not install and you need to do a manual install. If there is not yet a custom install under software downloads
you can download the pdf and zip of the generic install and copy your existing driver files from the CD, or do a manual install from PDF
Readme pdf
Generic install zip file
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