測量累積噪音曝露量，測量結果以百分比表示 噪音計(70 ~ 140dBA) 時鐘和萬年曆(1355) RS232介面可與電腦連線(1355)
Measure% Noise Dose/ Exposure Time/ Sound Level Real time clock with calendar(1355) RS-232 interface(1355)
