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Operation Guide IDR-200
6
MAIN UNIT/SUB UNIT COMMUNICATION PRECAUTIONS
Sub Unit Location
• Certain environmental conditions can greatly reduce the communication range.
• Avoid the following locations for the sub-unit.
Inside or among
buildings, or near
neon signs
Inside a vehicle Near refrigerators
or other household
appliances, near
office equipment,
mobile phones or
wireless LAN
devices
Near a
construction site,
airport, or other
sources of
electrical noise,
underground or in
tunnels, near
railroads,
highways, or radio
stations with
interfering
frequencies
Near high-tension
power lines
• Locating the sub-unit near a device that transmits radio signals using the same frequency as this product can
cause communication failure of this product.
• Avoid using multiple products in the same area. Doing so can cause mixing of their signals.