Digital sound lavel meter

This Sound Level Meter has been designed to meet the measurement requirements of safety Engineers, Health, Industrial safety offices and sound quality control in various environments. And This unit conforms to the IEC651 type 2 for Sound Level Meter. Features: 1. Ranges from 35dB to 130dB at frequencies between 31.5Hz and 8 KHz. 2. Display with 0.1dB steps on a 4-digits LCD. 3. With two equivalent weighted sound pressure levels, A and C. 4. Both AC and DC signal output is available from both standard 3.5mm coaxial socket suitable for a frequency analyzer, level recorder, FFT analyzer, graphic recorder; etc. 5. High performance 6. Newly designed shape 7. Bulit-in calibration check 8. Max hold and Data hold function 9. Analog AC/DC outputs for connection to an analyzer or recorder Specifications: Standard applied IEC651 type 2 Frequency range 31.5Hz~8KHz Measuring level range 35~130dB Frequency weighting A/C Microphone 1/2 inch electret condenser microphone Calibration Electrical calibration with the internal oscillator(1kHz sine wave) Display LCD Digital display 4 digits Resolution 0.1dB Display Up data 0.5 sec. Time weighting FAST(125mS), SLOW(1 sec.) Level ranges Lo: 35-100dB Hi: 65-130dB Accuracy + 1.5dB (under reference conditions) Dynamic range 65dB Alarm function “OVER” is show when input is out of range Maximum hold Hold readings the Maximum Value, with decay < 1dB>