Withings BPM Core Instruction Manual page 33

Voltage dips,
short interruptions and
voltage variations on power
supply input lines
IEC 61000-4-11
Power frequency (50/60 Hz)
magnetic field IEC 61000-4-8
-5 % UT(95% dip in UT) N/A
for 0.5 cycle, -40 % UT
(60 % dip in UT) for 5 cycles,
-70 % UT(30 % dip in UT) for
25 cycles, -5 % UT
(95 % dip in UT) for 5 sec
30 A/m 30 A/m
50 Hz or 60 Hz 50 Hz and 60 Hz
Mains power quality should be that of a typical commercial
or hospital environment. If the user of the EQUIPMENT or
SYSTEM requires continued operation during power mains
interruptions, it is recommended that the EQUIPMENT or
SYSTEM be powered from an uninterruptible power supply
or a battery.
Power frequency magnetic fields should be at levels
characteristic of a typical location in a typical commercial
or hospital environment.
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