PCI PC Watchdog Timer Image PCI OS Watchdog Timer Text Image

NOTE: Effective August 01, 2014

This product has gone EOL (End of Life). Please read the notice here: PCI EOL Statement
For new designs we recommend the PCIe (Express) version of the PC Watchdog since it has all the same I/O capbility.
This page will be left active for information purposes only.

PCI PC Watchdog Timer Description

This board installs in a standard PCI (5V, 3.3V and PCI-X) slot and monitors a PC for hardware/software lock-ups or computer malfunctions. It provides a solution to reboot PC file servers, telecom, security, kiosk, video surveillance, digital signage and industrial systems that occasionally lock up but must be available on a continuous basis. Increase your system availabilty and protect against unexpected downtime or blue screens (BSOD).

The PCI PC Watchdog timer ships with utility programs for control & "tickling" of the board. Sample source code and libraries are also provided in Visual "C" and Visual Basic to allow users to write their own applications to configure or "tickle" the board. Use the CD image download below to see the samples provided along with all the programmer's documentation. The PCI PC Watchdog works with Win 2K XP Vista Win7 Win 8 Server2003 Server2008  (32 & 64 Bit Versions on all). It also has LINUX support.

As well as functioning as a watchdog timer, the PCI PC Watchdog board also provides additional user I/O on the DB-25 connector on the rear of the board. The I/O is configured by DIP switch options as well as user provided software.

The board meets the dimensions for the PCI MD1 (low-profile) specification for use with small PC cases. The board can be ordered with a low-profile bracket for use in a low-profile case or it can be ordered with a standard size bracket for regular PC cases. It also has a universal PCI interface that works with +5.0V and +3.3V PCI slots. It also works with PCI-X (not PCI Express) slots.


  • Watchdog timer can be set for 5 seconds to 1 hour by DIP switch or 1 second to 18 hours via software control.
  • Can be used right from the box with supplied programs.
  • Has an on-board temperature sensor to detect fan failures or other over-temp conditions.
  • Has two temperature trip points for alerting.
  • Programmable option to allow the PC Watchdog to hold the PC in reset after the upper trip occurs.
  • Audible alarm for the temperature trip points.
  • The temperature trip points can be modified by user software.
  • Two externally visible LEDs show status of PC Watchdog.
  • Programmable power-on delay to allow the PC to complete its initialization sequence.
  • Non-Volatile memory to store operating parameters.
  • Eight bytes of non-volatile memory reserved for user data to implement simple software protection.
  • Two relays (DPDT - 2 form C) with contacts available on the DB-25 connector.
  • Relays can be set for 3-4 second pulse or continous latch on after a PC reset.
  • One relay can set for 3-4 second pulse or continous latch on after an overtemp.
  • Four (4) general-purpose digital inputs (TTL Level) on DB-25 connector.
  • Four (4) general-purpose digital outputs (TTL-OC Level) on DB-25 connector.
  • External digital input (TTL Level) to "tickle" the watchdog on DB-25 connector.
  • Single channel 8-Bit Analog input on DB-25 connector.
  • Support for PCs without a motherboard reset header available with: ATX-Reset-Adapter

Pricing & Purchase Link

PC Watchdog items can be purchased at the Berkshire Products online store.
      Buy PC Watchdog Products
(Clicking this link will take you to a new site for the store.)

There were two versions of the PCI watchdog. The original one was a standard size PCI card for standard +5V PCI slots and the other one was a low profile version with a universal +5V/3.3V PCI interface. The two were merged into a single product in a low-profile format. All the features of both cards are now included in the new version. No features have been excluded. Customers can still order the boards using either the 1130 or the 1134-xxx part numbers.


PCI PC Watchdog PDF Manual
- This link is for the latest version of the PCI Hardware Manual.

Universal DLL PDF Programmer's Manual
- This link is for the latest version of the Universal DLL Programmer's Manual which describes all the functions provided in the DLL for users who write their own application programs.

Distribution CD Image File (ZIP File)
- This link is for the current version of the distribution CD that contains all the manuals, programs, drivers, and the sample software. This includes the sample "C" and VB.net code for those users who wish to write their own aps or want to incorporate watchdog support into their existing software.

Larger Images

PCI PC Watchdog Timer Large Image PN: 1134-LPF
PCI board with low-profile bracket for use in PC cases that meet the PCI MD1 or MD2 spec.

PN: 1130
PN: 1134-STD
PCI board with standard bracket for use in most PC cases.