this equipment has been designed to meet the measurement requirement of safety engineers,health,industrial safety offices and sound quality control in various environment,which include factory,office,traffic,family,and audio system. this is an easy to use and handy mini sound level meter. designed for sound quality control that measures sound level from 30dba up ~ 130dba. it has auto range, wide measuring and frequency range (31.5hz ~ 8.5khz), maximum hold, frequency weighting a and auto backlight. just press one button readings are instantly displayed. a practical little tool great for noise pollution monitoring, home theater setup, health and safety compliance, vehicle noise testing, etc.

*this unit was designed according to following standards:
----a. international electrician committee standard: iec pub 651 type2
----b. us national standard: ansi s1.4 type2

*measuring range:
----30~130 dba

----35~130 dbc
*accuracy: ±1.5 db

*digit & resolution: 5位& 0.1 db

*frequency response: 31.5hz ~8.5khz

*measuring level: 30~130, 40~90, 50~100, 60~110, 80~130

*frequency weighting characteristic: a & c

*time weighting: fast/slow

*sampling rate: 2times/second

*microphone：1/2inch polarization capacitance microphone

*ac/dc output

*max reading

*overload indication: over / under

*low battery indication

*auto power off / cancel “auto power off”

*packing method: pp box + gift box
*power: 9v 6f22 battery * 1pcs or dc 6v 100ma adapter(not included)

*dimension: 207*70*29mm
*weight:308g (including batteries)

*standard qty per carton: 20pcs

*standard export carton size: 67*46*31cm

*standard export carton weight: 28kg

本產(chǎn)品的加工定制是否，品牌是標智BENETECH，型號是GM1358，類型是數(shù)字式噪音計，測量范圍是30~130dB，測量精度是±1.5dB，工作溫度是0~40（℃），尺寸是70*30*207（mm），重量是含電池（0.23）（kg）