重口SM一区二区三区视频,福利一区二区在线视频,小嫩模无套内谢第一次

午夜成人性爽爽免费视频,亚洲欧美日本韩国综合在线观看,小蜜被两老头吸奶头在线观看 ,亚洲欧美日韩综合久久久,日日橹狠狠爱欧美超碰,日本三级大片,国产99欧美精品久久精品久久,99久久国产亚洲综合精品

中文 English

0769-82788006

Home
Sound Level Meter
AR854 Sound Level Meter

AR854 Sound Level Meter

BRAND：SMART SENSOR

NO：AR854

Click to buy

Related products

Detail

FEATURES

Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft noise.

SPECIFICATIONS

Microphone	AWA14425 Prepolarized Condenser Microphone
Measuring Range	30~130 dBA
Accuracy	±1.5dB
Frequency Weighting	A
Frequency Range	20Hz~8KHz
Level Range Bar Graph	√
Range Selection	---
Range Over Indication	√
Battery Indication	√
Digit & Resolution	3 digits & 0.1 dB
Time Weighting	Fast / SLow
Backlight Display	√
Max / Min Hold	√
Auto Power Off	√
Standard	GB/T3785-1983 IEC 61672-2002 class 2
External power supply	√
AC & DC Signal Output	√
Data Storage	10000 groups

PACKING INFORMATION

Power	4*1.5V AA batteries
Product Net Weight	190g
Product Size	2158234mm
Packing	Gift box
Standard Quantity Per Carton	12
Standard Carton Size	5233.547cm
Standard Carton Gross Weight	12.5kg

Related products

TEL：0769-82788006

0769-82788006

官方微信