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Telephone ring detector with relay output

Velleman K8086: Telephone Ring Detector with Relay Output

Velleman K8086

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Expected in stock on:
Mar 25, 2018

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Velleman K8086 Telephone Ring Detector with Relay Output

Are you or someone you know hard of hearing? Do you live or work in a noisy environment? Tired of your outdated boring ring tone? Whatever your reason, never miss another phone call with the Velleman K8086 Telephone Ring Detector. Simply attach this module to your telephone and watch as powerful LEDs light up to alert you of incoming telephone calls. This kit includes an enclosure and adhesive strips for easy mounting.


  • 10.000 mcd led !
  • connects to PSTN line
  • RJ11 connector
  • supply: 12VDC/100mA adapter (Ex. PS1203)
  • output Contact (NO): 1A max.
  • dimensions: 3.15 x 2.16 x 1.37"


  • simply connect in parallel with phone line
  • powerful led flashes when phone rings
  • the unit will feature a relay output if connected to a 12VDC power supply
  • relay output: continuous or on/off to the rhythm of ringing of the telephone
  • complete with enclosure
  • great for noisy environments, for the hearing impaired, as addional ringer, to replace existing ringer, ...
  • accepts standard adaptor & telephone plug
  • includes:
    • attractive enclosure
    • adhesive strips for easy fixing

Additional Information

Difficulty Level 2
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User manual
Illustrated english manual

User manual
Translated assembly manual (nl - fr - de - es)

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.

Frequently Asked Questions

Q. What is the difference between the K8086 and the VM144 Ringer Kits?


The VM144 is a module (prebuilt and tested). The K8086 is the kit version (soldering required).

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