ᐅ House Construction with a Developer – Electrical Systems and Warranty

Hi everyone,
we are building a house with a developer and have just completed the electrical customization. Initially, we had requested motion sensors including installation. Since I can buy almost two motion sensors online for the quoted price, I asked them to remove the sensors and only install the necessary wiring. The response was as follows:

"For the circuits with motion sensors, only the connections were requested. I would like to point out that if you install the motion sensor devices yourself, the warranty will be void. This is an intervention in our installation and possibly also a violation of electrical regulations if the devices do not meet the standard with the appropriate certification marks."

I don’t quite understand this. Wouldn’t the warranty also be void if you simply connect a lamp to a light outlet...? What do you think?

Yes, that's true. If you connect any cheap firecracker to a light fixture, the warranty will be void.
They're just protecting themselves.

Yes, understandable, because if it doesn’t work, the customer never accepts it as his China stuff. You can get everything cheaper online, just not the installation and the warranty.

But when it comes to warranty or the extra effort required to install and adjust that junk, then it’s not supposed to cost anything.

I would have installed exactly the same motion sensor that he offered me. €100 online vs. €175 from the electrician.

You didn’t understand. The price includes both the labor and the warranty that he is obligated to provide to you. When buying from a retailer, you have to handle the installation yourself, and the retailer’s warranty won’t really help you because they can easily argue that any connection not done by a qualified professional is initially questionable. Then you would have to prove that your installation met all guidelines and standards, which you won’t be able to do after the damage, since no expert will certify that for you.

There are even insurance companies that refuse to pay out in such cases (though they have to advance the payment first, they will reclaim it from you afterward).

Thank you for the clarification. Now "I too" 😉 have understood it.