With this device, an Electromagnetic Pollution Detector, the electromagnetic pollution from pulsed high frequency in your environment becomes audible. Electrical devices, increasingly sophisticated, are almost constantly used everywhere in our day-to-day life. Unfortunately, this is not always an advantage. People do not all the time give enough consideration to the impact of electromagnetic radiation so that more and more people suffer from adverse health effects. With the PKI 8535 Electromagnetic Pollution Detector, you can hear electromagnetic pollution produced by mobile phones, wireless DECT phones and other devices. Its use is most simple; just push the button to do a first check of your personal environment.