7
Rev.1.25
[Precautions for use]
• Operating temperature: 5 °C - 35 °C {41 °F - 95 °F}
When calculating the battery life, note that temperatures below 10 °C {50 °F} shorten the battery
duration.
• Do not disassemble the product or touch internal parts.
• Exercise care when using the product in high places. If it falls down, it may cause personal injury or
suffer damage.
• Do not use or leave the battery in places where it will be exposed to high temperatures, such as in
strong direct sunlight, in a sun-heated car, by the fire, or in front of a stove.
• Do not touch the battery poles or contacts inside the battery cover with dirty hands. Otherwise poor
contact or noise may result. If dirty, wipe off with a dry soft cloth.
The contacts inside the battery cover tend to get dirty. Clean them regularly (about once a month)
with ethyl alcohol. Do not use solvents, such as benzine or thinner, or a metal polish. Otherwise the
contacts may become deformed or discolored, or the brass plating may come off.
• Do not use a deteriorated or short-circuited battery. A battery in this condition may leak fluid,
overheat and cause damage.
• The product is not made to drip-proof specification. Do not use the product with the wet hands in a
place where it is directly exposed to water.
• Do not swing the product around on the neck strap. As a preventative measure against strangling,
the closure of the neck strap provided is designed to give way under pressure. If swung around on
the neck strap, the closure will open and the product will come free, which can cause injury or
damage to product.
• The product is designed for indoor use.
• Use the product in a location where it is relatively shielded from noise produced by rotating
machinery, transformers or the ignition system or automobiles.
• Do not place the product on top of heat generating equipment, such as powered amplifiers, video
monitors or measuring instruments, and do not leave it in a closed car in hot summer. When storing
the product, do so in a dry place.
• The product is high-precision adjusted; exposing it to strong impact or dropping it on the floor may
change its characteristics. Handle the product with care. Do not expose the product to shock or
impact, as this will cause the audio output of the receiver to give off noise on impact.
Product care
• Clean the power source with a dry cloth.
• Do not clean with volatile liquids such as benzine and thinner.
• When using a chemical cloth for cleaning, observe the cautions provided with the product.
Useful hints
• Noise prevention
Turn off the power of this product, and turn down the volume of a powered amplifier, mixer, etc.
before replacing, removing or inserting the battery, as this might produce a loud noise from these
devices.
• Volume control
When the volume control from this product goes wrong, move closer to the receiver and then try
again to adjust the volume.
