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Please follow the instructions in this manual to obtain the optimum results from this unit. 
We also recommend that you keep this manual handy for future reference.

ER-604W

COMPACT MEGAPHONE

INSTRUCTION MANUAL

1. SAFETY PRECAUTIONS

• Be sure to read the instructions in this section carefully before use.
• Make sure to observe the instructions in this manual as the conventions of safety symbols and messages

regarded as very important precautions are included.

• We also recommend you keep this instruction manual handy for future reference. 

Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.

CAUTION

• Make sure that the volume control is set to minimum position before use. Loud noise produced when using

the unit at high volume can impair hearing. 

• Make sure to observe the following handling precautions so that a fire or personal injury does not result from

leakage or explosion of the battery. 
· Do not short, disassemble, heat nor put the battery into a fire.
· Avoid using both new and old batteries together.
· Do not solder a battery directly.
· Note correct polarity (positive and negative orientation) when inserting a battery in the unit.
· Avoid locations exposed to the direct sunlight, high temperature and high humidity when storing batteries.

2. GENERAL DESCRIPTION

TOA's ER-604W megaphone is a small, lightweight shoulder-held megaphone that is also supplied with a
whistle. Its close-talking microphone features a press-to-talk switch and a volume control, which can be easily
operated by hand. The ER-604W's External input terminals can also be connected to an optional wired
microphone, headset microphone, CD player, MD player or cassette player to make public address
announcements or play music.

3. HANDLING PRECAUTIONS

• The ER-604W megaphone is not waterproof. Avoid exposure to rain or environments where it may be

splashed by water or other liquids.

• When the batteries are left loaded for long periods of time, be sure to check the batteries periodically for

discharge and leakage.

• Immediately contact your TOA dealer if the following irregularities should occur.

· Smoke coming from the unit or a strange smell detected.
· Water or other foreign objects get inside the unit.
· No sound heard (after checking to be sure that the batteries are loaded in correct orientation, and

satisfactorily charged).

To avoid catastrophic failure, make no further attempt to use the unit in these conditions.

• Avoid storing the unit in humid or dusty locations, in locations exposed to direct sunlight, near heaters, or

exposed to sooty smoke, as these conditions may result in unit failure.

• Do not use the unit for extended periods of time with a distorted sound output. This could cause the speaker

to become hot and possibly result in unit failure.

• Noise may be produced when a mobile phone is used in close proximity of the unit. However, this is not a

failure. Use the mobile phone as far as possible from the unit.

• Use a tightly wrung-out damp cloth to clean the unit. If the unit becomes extremely dirty, use a cloth

moistened in a neutral detergent and tightly wrung-out. Never use volatile liquids such as benzene or thinner
to clean the unit, as these may deform or discolor its case.

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