How to use To measure the sound level within the human audible range, select A weighting mode (simulate the hearing characteristics of human ears) mode.To measure the actual sound level, select C weighting mode. To read real-time sound level, select FAST (high speed). To obtain the average sound level, select SLOW (low speed). To obtain the maximum sound level, press “MAX” function key and you can read the maximum sound level reading value, press MAX key again to return to the normal measurement mode. To light up the backlight of LCD when measuring at night, press key. Specification: ● Sound pressure accuracy: ± 1.5 dB (sound pressure standard, 94 dB @ 1KHz). ±5 dB (sound pressure standard, 94 dB @ 8KHz). ● Sound pressure measurement scope: 30-130 dBA, 35-130 dBC. ● Dynamic characteristic of sound pressure: FAST 125ms, SLOW 1sec ● Microphone: polarized capacitor microphone. ● Digital display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/sec. ● Analog bar display: Each analog bar represents 1 dB, sampling rate is 20 times/sec. ● Measurement gear level: 30-80 dB, 40-90 dB, 50-100 dB, 60—110 dB, 70—120 dB, 80-130 dB, 6 gear levels in total. ● Below or above limit prompt: indicated with “UNDER” or “OVER” display. ● Power supply: 4 x AAA batteries (Batteries not include) Package Include: 1*Sound Meter(Batteries not include) 1*User Manual 1*Carry Bag
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