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2 1/4" 7-segment digital clock

Velleman K8089: Seven Segment Digital Clock

Velleman K8089

The Velleman K8089 Seven Segment Digital Clock Kit


In need of a reliable new clock for your desk, bedroom, or window display? Use the Velleman K8089 digital clock for displaying the time, temperature, or an open/closed message. With a clean design and clear display, this clock is the perfect time-keeping kit for DIYers.

Program the K8089 to operate on either a 24hr or 12hr cycle. Easily adjust your inputs via time-setting switch. Program the clock to display the time consistently, or, have it switch between time and temperature. You can also choose have the display scroll “Open” or “Closed” for a store window.

To have your K8089 set up to read the temperature, add the Velleman K8067 General Temperature Sensor or VM132 Universal Temperature Sensor. Minimum temperature readout is -4 degrees Farenheit and maximum is 158 degrees Farenheit.

While the assembled kit is easy to mount and set up, the soldering for the K8089 can be a bit tricky so we recommend you have a bit of experience with soldering and assembly.



  • Power supply: 12VAC (e.g. PS1205AC)
  • Power consumption: 250mA max.
  • Backup battery: 3V (CR2032)
    • Power consumption on backup battery: +/-1mA
  • Dimensions: 9 x 2.9 x 1.26"


  • 12/24h clock system
  • Auto toggle function
  • Back-up battery included
  • Automatic frequency detection
  • Min temp readout:
    • -20°C
    • -4°F
  • Max temp readout:
    • 70°C
    • 158°F

Additional Information

Difficulty Level 5

Info Sheets

Resistor colour code

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product