white paper
ECOLOG Measuring Report – EnOcean Minimizes Electric Smog
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Feb 2009 - Subject to modifications
ECOLOG Measuring Report -
EnOcean Minimizes Electric Smog
1. Purpose
Purpose of the measurement was to evaluate the strength of the
high-frequency electromagnetic fields emitted by the radio
switches of EnOcean, regarding possible harmful effects and the
comparison with the emissions of conventional high-frequency
sources in homes and offices.
2. Assessment
…"Furthermore, the power flux densities caused by the radio
switch are significantly below the power flux densities that may
arise from the operation of a conventional light switch." [1]
"From the perspective of health protection and the reduction of
exposures to electromagnetic fields, the radio switch has another
advantage over conventional switches: when installing a radio
switch, the length of lines conducting power is reduced and, thus, the potential
exposures to low-frequency magnetic fields are minimized. This is especially
interesting when higher currents are carried by the lines, e.g., for supplying the
lighting in open plan offices and when permanent work places are located near the
lines." [1]
3. Comparison of power flux densities
Device/ System
Power flux density
(W/m²)
Distance (mDuration
EnOcean Radio switch
0,000013
1
few ms when operated
Convent. light switch
0,0015
1
few ms when operated
WLAN Access Point
0,01
2
during data exchange
Wireless network card
0,1
0,5
during data exchange
DECT phone
1
0,1
during phone call
Mobile phone
12-42
0,1
during phone call
DECT base station
0,00001 - 0,1
various
permanent
Conventional light switches cause 100 times higher high-frequency emissions.
Sources: [1], [2]
4. Execution of the measuring report
ECOLOG-Institute
for Social-Ecological Research and Education gGmbH,
Nieschlagstraße 26, D-30449 Hannover:
•
[1] ECOLOG Measuring Report "High frequency emissions of radio switches
of EnOcean Co.", February