# Is the maximum audible noise from power supplies regulated in Europe?

Power supplies make sometimes a lot noise in the range of kHz. Is there a regulation for the maximum allowed noise emission for consumer electronics on the European market?

Is there a regulation which would protect customers who buy an alarm clock, but can not sleep anymore, because it chirps loud?

Where can I look up, which sound profile a device for the European market may emit?

So far I found only the German "Technische Anleitung zum Schutz gegen Lärm – TA Lärm" and The Outdoor Noise Directive 2000/14/EC (OND).

• Have designed several power supplies and put them on the European market but never ran into any requirements for audible noise. It is however annoying AF with squeaking and beeping consumer devices. – winny Dec 25 '17 at 17:03

• The mentioned page in the Swiss brochure is very informative. The list of regulations include DIN EN 29295 "Acoustics; measurement of high-frequency noise emitted by computer and business equipment" how to measure noise of devices in the office ISO 9295:1989. I will have to read the references now. – Jonas Stein Feb 6 '18 at 10:24