SOUND LEVEL METER DS300 Dosimeter Individual noise dosimeter with two-channel measurement. Technical data • Only one dynamic range extended from 100 dB : 40-140 dB  • Conventionnal and integrating-averaging sound level meter mode  • Two-channel measurement  • Audio-recording on exceeding thresholds, peaks or short LAeq   Measured values • Sound pressure level: LAF – LAS – max-min  • Equivalent continuous level: LAeq – LCeq – LXeq - octave bands 63 Hz/8 kHz  • Detection and peak counting: 135dB – 137dB – 140dB  • Daily sound exposure level: Lex,d  • Sound exposure: EA,T : in Pa²h  • DOSE Supplied with calibration certificate, Windshield, LDS23 software, Microphone fixing kit and carrycase.