Should be simple to answer.

[Mustwin351]

I have your typical photo sensor rated at 120v.

Is 120v the max rated voltage? Or is it possible to operate it on 12v ac.


The reason I ask is I would like to put it on the secondary side of my transformer (12v side) so as to be able to move the photo sensor to a brighter area instead of remounting my whole setup.

Thanks.

 

[KrisBlueNZ]

It's very hard to answer this question because so much important information is missing.

The term "photo sensor" has many meanings, depending on context, but your question doesn't have much context. What is the part number or model number of the "photo sensor"?

If this "photo sensor" is a device that is powered from the 110/120V AC mains supply, then no, it will not operate from 12V AC instead.

 

[Mustwin351]

Yeah it's your typical photo sensor for a light. Thanks Kris.

 

[davenn]

Yeah it's your typical photo sensor for a light. Thanks Kris.

still not overly helpful

show a photoof the component/unit inside and out

Dave

 

[Mustwin351]

It is an intermatic brand product. Model # k4121c. Or use this link.
http://www.intermatic.com/en/Products/Sensors/PhotoControls/K4100_and_K4400_Series/K4121C.aspx

It says 120v but I was hoping that was a maximum and not necessarily mandatory for operation.

I would post a pic but I am not sure how to do that from my phone.

 

[duke37]

The instructions clearly state that the correct voltage is listed on the label. It is very doubtful if the unit will operate on a significantly lower voltage.
There is a mechanical switch (relay?) inside which will need power to operate.

 

[Mustwin351]

Ok thank you guys. I figured as much just wanted to make sure.