Appendix A Names And Contents Of Toxic And Hazardous Substances Or Elements; Appendix B Acoustic Output Data - Youkey Q7 Instructions For Use Manual

Appendix A
hazardous substances or elements
Table：Names and contents of toxic and hazardous substances or elements
Toxic or
hazardous
substances
lead（Pb）
or elements
×
Internal
wire rod
○
LCD
Button/Pol
ybrominate
○
d biphenyls
Shell(Plasti
○
c cement)
Shield
○
×
PCBA
○：Said the content of toxic and harmful substances in all homogeneous materials in the parts of
the SJ/T11363-2006 in the specified limits requires the following.
×：The toxic and harmful substances exceeded the limitation of SJ/T11363-2006 standard in the
content of at least one of the homogeneous materials.
Appendix B
The meaning of each symbol in the sound output table：
Symbol
Α
Acoustic attenuation coefficient
A -12dBOutput acoustic beam area
aprt
D Equivalent pore diameter
eq
d Equivalent sound beam diameter
eq
f Sound working frequency
awf
I Pulse average sound intensity
pa
Average
I
pa,α
attenuation
I Impulsive sound intensity integral
pi
I Pulse sound intensity integral
pi, α
Names and contents of toxic and
Toxic or hazardous substances or elements
mercury cadmium
（Hg） （Cd）
○
○
○
○
○
○
Acoustic output data
Meaning
sound intensity
Hexavalent
chromium
（Cr(VI)）
○ ○
○ ○
○ ○
○ ○
× ×
○ ○
after
Polybromin
Two
ated
phenyl
biphenyls
ether
（PBB） （PBDE）
○ ○
○ ○
○ ○
○ ○
○ ○
○ ○
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