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velleman mk125 Light Sensitive Switch Kit image Zoom

Light Sensitive Switch Kit

SKU: MK125
Fully Automatic Light Sensitive Switch Kit, 12VDC turn your lights on when it gets dark.

Availability: In stock
Assembly Required: Yes



Assembly Required!
  • Buy 10 for $7.15 each and save 11%
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Product Description


    Switch-on at dusk, turn off at dawn, fully automatic.


    • wide-range adjustable sensitivity
    • delay circuit avoids cycling / chattering


    • relay output: NO/NC 24V/5A max with screw terminal connections.
    • power supply: 12V DC
    • with adapter-connector 2.1m center positive.
    • dimensions: 2.6 x 2.0"


    MK125 is a kit of parts containing the PCB and parts.ᅠ Assembly required.
    Tools needed: Low heat soldering iron, resin core solder, clippers and small screw driver.



    Use a pullup resistor on your Arduino input, connect the Common Pin of the relay to Ground from the MK125 and the NO pin to your input pin, when the relay is on the input will be LO, when the relay is off the input to the Arduino will be HI.


    A typical pull up value would be 10K

Additional Information

    Additional Information

    SKU MK125
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