4Safety PrecautionsTo prevent severe injury and loss of life/property, read this section carefully before usingthe unit to ensure proper and safe operation of your unit.pp This section explains the graphic symbols used in this manual.WARNING Denotes a potential hazard that could result in seriousinjury or death.CAUTION Denotes hazards that could result in minor injury ordamage to the unit.Handheld computer : JT-H320HT-E1, JT-H320HT-E2WARNINGDo not stare into the beam directly.There is the risk of damage to the eyes when prolonged directly viewing.Do not operate this product during walking, bicycle riding, or car driving.There is the risk of falling or a traffic accident.Do not put this product close to a medical equipment. (Do not bring this product into operatingroom, intensive care units (ICU) and coronary care units (CCU))Do not use this equipment close to an automatic control equipment like an automatic door firealarm and so on.Radio waves from this equipment may cause the trouble by a malfunction for medical equipment orautomatic equipment.CAUTIONDo not put this product on an unstable place.This can cause damage to the unit or injury by falling.Do not put this product on a place with moisture, dirt, greasy fumes, or steam.There is the risk of injury.Do not look inside the code reading portion or aim that area at people.There is the risk of damage to the eyes when directly viewing of white light for a long time.Do not hold this product for too long when the power is on.There is the risk of a serious low-temperature burn.