Thanks for choosing the megaphone. Please study this instruction manual
carefully before use to ensure safety and proper usage.
1. Package list
1.1 Megaphone
1.2 Instruction manual
2. Parts and Functions
1. Speaker: Converts the electrical signal into sound.
2. Microphone: Condenser type microphone that converts the output into
electrical signal.
3. VOL. controller: adjust the output volume，turn right to increase and left to
decrease.
4. Power Switch: press the switch to activate the megaphone.
5. Handle grip: easy to hold the megaphone.
6. Shoulder strap: easy to carry over one's shoulder or hands.
7. Battery compartment: loads 6pcs of AA batteries.
8. Battery lid: Open to load the batteries.
9. Function switch: Switch for the functions (S for siren，F for fog horn，and
W
for whistle). Microphone will be off when signal function is on.
3. Operation Instructions:
3.1 Power source
3.1.1 Power: loads 6pcs of AA batteries into the compartment and put
compartment in to megaphone with right direction.
(Note: The compartment can not be put in with wrong direction switch.
3.1.2 Be sure the batteries are well loaded and close the lid in place.
3.2 How to use the megaphone
3.2.1 Find the function switch on the bottom of the megaphone and switch to M
position.
3.2.2 Press the trigger and speak to the microphone. The VOL. controller is
placed below the microphone. Turn right for louder volume.
3.2.3 Please note the closer the mouth is to the microphone the higher the
sound level is.
3.2.4 If feedback is caused, turn the volume lower to it.
3.3 How to activate the functions
3.3.1 Switch the function knob to the required position (S for siren, F for fog
horn, and W for whistle, and press the trigger.)
4. Troubleshooting
4.1 When the megaphone does not work
4.1.2 Check if the battery capacity is too low.
4.1.3 Check if the battery terminals are matched correctly & firmly.
4.1.4 Check if the battery lid is in place.
4.2 When the megaphone functions does not work, check if the knob is on the
right position.
5. Specifications
5.1 Rated output power: 1.8W
5.2 Power source: AA battery 6 pcs
5.3 Battery life: approx. 6-hr
5.4 Microphone: condenser microphone
5.4.1 sensitivity: -78 ±3dB.
5.4.2 impedance: 2.2kΩ
5.5 Dimension: Ø150mm x L307mm
5.6 Weight: 0.6kg (without batteries)
6. Precautions
6.1 Do not expose under direct sunlight or the high temperature environment
for a long period of time.
6.2 Avoid exposing to rain, water or heavy humidity.
6.3 Do not use the megaphone close to people's ears. This may cause hearing
damage.
6.4 If not in use for a long period of time, remove the batteries and store them
separately to prevent leaking batteries and damaging the circuits inside of
the megaphone.
6.5 When cleaning the megaphone, please sue neutral detergent. Never use
detergent including benzene.
6.6 This product should be kept away from the screen of TV set, computer
and any electrical devices which are with CRT to prevent the interfering
AHM-621
使用說明書
Instruction Manual
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