A.15ْC-25ْC;40%-70% B.18ْC-28ْC;45%-75% C.15ْC-25ْC;45%-75% D.18ْC-28ْC;40%-70%
A.16DB B.26DB C.12DB D.22DB
A.0.50% B.1% C.1.75% D.3%