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damage. manufacturers will not be held responsible for any damage
resulting from use of this unit with a voltage other than that which is
specied.
Volume control
• The sound level at a given volume setting depends on speaker
eiciency, location, and various other factors.
• It is advisable to avoid exposure to high volume levels.
• Do not turn the volume on to full at switch on. Listen to music at
moderate levels. Excessive sound pressure from can cause hearing loss.
Battery change
• Remove the battery if the unit will not be used for a long period of time.
This will prevent potential damage due to battery leakage.
• Do not use rechargeable battery (nickel-cadmium battery, etc.).
• Installing the battery incorrectly may cause the unit to malfunction.
• Batteries (battery pack or batteries installed) shall not be exposed to
excessive heat such as sunshine, re or the like.
• Replace the battery if the operating distance is reduced or if the
operation becomes erratic. Purchase an “AAA” size battery (UM-4/SUM-
4 size similar).
• Periodically clean the transmitter on the remote control and the sensor
on the unit with a soft cloth.
• Exposing the sensor on the unit to strong light may interfere with
operation. Change the lighting or the direction of the unit if this occurs.
• Keep the remote control away from moisture, heat, shock, and
vibrations.
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