True UES900 Owner's Manual page 34

CHAPTER 6: ADDITIONAL INFORMATION
TROUBLESHOOTING GUIDE (continued):
The battery inside the transmitter
belt is depleted
Another user wearing a
compatible transmitter strap is
within 3 foot (1 meter) of the unit
Heart rate is
Environmental interference from
displaying
high voltage power lines
erratically or not
Environmental interference from
displaying
computers
(continued)
Environmental interference from
motor driven appliances
Environmental interference from
cell or cordless phone
Environmental interference from
Wi-Fi router
Replace the transmitter belt with a compatible
transmitter belt
Move the units so that there is more space in-between units
Move the unit to another position within the room or move
the cause of the interference until heart rate reading are
stable. If the probable source of interference is plugged into
the same outlet move the suspect source to another outlet.
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