JTS SIEM-111T Manual page 2

ATTENTION
Please pay high attention to the following information.
The guideline published by Occupational Safety Health
Administration (OSHA) in United States indicates
overload volume level for prolonged listening may harm
your hearing. Here below are referenced data
on maximum time exposure to sound level before
hearing injury occurs.
Sound Level (dB)
90
92
95
97
100
102
105
110
115
140
Duration per day (hrs)
8
6
4
3
2
1.5
1
0.5
0.25
Avoid or injury may occur