The esi 24 has a very sensitive antenna system that makes alternating electric and magnetic fields and high-frequency radiation visible using the LED traffic light principle.
HF < 50 MHz to 10 GHz
LF < 16 Hz to 3 KHz
Different field strengths are represented by the individual traffic light colours and this is supported by a loudspeaker that gives an audible indication of field strengths. The display shows 5 different levels in this way, ranging from no abnormality (i.e. no significant radiation exposure) to extreme abnormality (strong exposure to radiation). Locations exposed to high levels of radiation should generally be avoided and as little time as possible should be spent there. For all models, the levels set for the LED displays are determined by the guideline values for sleeping areas recommended by the Institute for Building Biology, Germany
If you are concerned by very abnormal values, you should consult an experienced specialist for Building Biology.
• esi 24 Detector
• 9V 6LR61 battery
• operating instructions
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