'digital sound level meter decibel logger 30-130db 
quick overviewthis product is designed to meet the measurement requirement of safety engineers, health, industrial safety offices and sound quality control in various environments.
features:
it is designed according to following standards, international electrician committee standard: iec 651 type 2 & ansi 1.4 type 2.
with modern compact and portable appearance design.
accuracy up to +-1.5db.
maximum value holding function to lock up the maximum reading.
large lcd screen with digits reading.
equipped with a sponge ball.
auto power off design for energy saving.
auto backlight display.
portable, easy-to-use and handy instrument for sound quality control in factory, traffic, family, and audio system.
specifications:
measuring range: 30-130dba
accuracy:+-1.5db
frequency range: 31.5hz to 8.5khz
frequency weighting: a
digital display: 4digits
resolution: 0.1db
sample rate: 2 times/second
microphone: 1/2 inch electret condenser microphone
max hold: max
power supply: 9v battery (the battery is not included)
power life: about 30 hours (alkaline battery)
operating condition: 0-40 degree 10-80%rh
storage condition: -10--+60 degree 10-70%rh
product weight: 105g
package weight: 130g
product size: 14.2 * 5.3 * 3.5cm
package size: 15.2 * 6.0 * 4.2cm
package list:
1 * sound level meter
1 * sponge ball
1 * user manual
本系列产品可适用于居住小区，家庭，工作车间，办工场所等日常环境监测。
gm1351迷你型噪音计。本产品采用全新低功耗芯片设计，辅以科学算法，采用自主软件创新，自主电路改良，从而实现对同类产品精度、稳定性、性价比的超越，实现为用户创造价值的设计。产品采用科技人体学机械、外观设计，辅以可选保护套配件，实现对产品更全面的保护。
设计标准：
----a. 国际委员会iec651 type2标准
----b. 美国国家标准ansi s1.4 type2
*测量范围： 30~130 dba
*精确度：±1.5 db
*数位&分辨率：4位 & 0.1 db
*频率响应：31.5hz ~8.5khz
*频率加权特性： a（模拟人耳）
*取样频率：2次/秒
*麦克风：1/2英寸电容式麦克风
*最大值锁定
*自动背光显示
*低电显示
*手动/自动关机
*包装方式：吸塑+卡纸
*电源：9v电池
*产品尺寸：57*26*149毫米
*产品净重：144克
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义乌鸿企电子商务有限公司
王顶伟
15397559601
城北路