Cem DT-173 Sound / Noise Level Data Logger

This data logger confirms to IEC61672-1 Class 2 standards. The device operates on a 3.6V lithium battery. DT-173 sound / noise level data logger is very accurate ( /- 1.4dB) and durable. This kit includes software that can be used to view and graph the downloaded data. Features Conforms to the IEC61672-1 Class 2 for sound level measurement NORM and PEAK mode Over range indication A & C frequency weighting Fast (125ms) and slow (1s) time weighting Calibration via software Manual and automatic start modes Technical Specifications Standard Applied IEC61672-1 CLASS2 Accuracy ±1.4dB Frequency range 31.5Hz to 8kHz Dynamic range 50dB Measure range 30dB to 130dB Data memory 129920 Sampling rate 1 second to 24 hours Frequency weighting A and C Time Weighting FAST 125 ms, SLOW 1 second Microphone 1/2 inch electret condenser microphone Operating indication Green LED flash Memory Full indication Yellow LED flash Data Output USB data traffic Power One 3.6V battery, specs : 14250 or 1/2AAA Electric current When measuring : 5.5mA; when periphery power is off or stop measuring:30uA Operation temperature and humidity 0 to 40°C (32 to 104°F) 10%RH to 90%RH Storage temperature and humidity -10 to 60°C (14 to 140°F) 10%RH to 75%RH Dimension 130 x 30 x 25mm (5.1 x 1.1 x 0.9″) Weight 20g (1oz) System requirement Windows PC Minimum hardware requirement 8M EMS memory, 2M hard disk, a free USB jack Package Included DT-173 noise level data logger Instruction manual 3.6V Lithium battery Windows software Clamshell