Zeromic STHD-F1, Instruction Manual

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Before using the product
●
Before using this product, please read the
instruction manual carefully and operate it in
the correct way.
●
Please keep this instruction manual in case
you need to consult.
●
To improve the product’s performance,
sometimes its specifications are required
to be changed.
●
Please contact the vendors if you have any
question about the instruction manual.
If you ignore the mark and operate the machine in the
WARNING
CAUTION
wrong way, it may causes death or serious injuries.
If you ignore the mark and operate the machine in the
wrong way, it may causes injuries or material damage.
Product features
●
Communicate with loud background noise
(~100dB).
●
Even with the headset,two-way radio main
speakers can also be used to play other ’s
voice.(select by function buttons)
●
The new technology does not require a
microphone (sending and receiving signals
through speake only). You can communicate
even with gas masks.
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