* Personal sound exposure meet IEC 61252

* Frequency and Time weighting are designed to meet IEC 61672 class 2.

* A & C weighting networks comply with standards.

* LCD is dot-matrix with backlight and easy reading.

* Combination Dose meter, Data-logger and Sound level meter.

* 0.5" standard microphone head.

* Time weighting (Fast & Slow) dynamic characteristic modes.

* Build External calibration VR.

* User-defined measurement configurations. Selectable Criterion Level,

* Exchange Rate, Threshold, Frequency Weighting, and Response Time setting.

* Condenser microphone for high accuracy & long-term stability.

* Memory function to store the Max. & Min. value.

* Hold functions.

* Real time Datalogger

  Records device of internal memory device (EEPROM) and an external memory device ( SD memory card ) ,Real time Datalogger, it Built-in Clock and Calendar, real time data recorder, sampling time set from 1 second to 3600 seconds.

* Manual datalogger is available ( set the sampling time to 0 second ).

* Innovation and easy operation, computer is not need to setup extra software, after execute datalogger, just take away the SD card from the meter and plug in the SD card into the computer, it can download the all the measured value with the time information ( year/month/date/hour/minute/second ) to the Excel directly, then user can make the further data or graphic analysis by themselves.

* SD card capacity : 1 GB to 16 GB.

* Can default auto power off or manual power off.

* Noise Dose %,SPL measurements.

* Microcomputer circuit, high accuracy.

* Power by UM4/AAA ( 1.5 V ) x 6 batteries or DC 9V adapter.

* RS232/USB PC COMPUTER1

* Heavy duty & compact housing case.