feature:
1. [4 in 1 function] the meter comes with 11 inch led screen, could display sound level, temperature, humidity and time, brightness adjustable, very practical.
2. [high accuracy] the sound level meter uses intelligent air semiconductor sensor to test the decibel, temperature and humidity value, which is more sensitive, accurate and stable.
3. [widely used] this decibel meter can be hung on the wall or placed on the table, ideal for testing sound level in classroom, studio, main traffic arteries, factory, construction site, home, office, etc.
4. [easy to use] this intelligent decibel meter is available at any time, easy to adjust brightness, detection speed and time. the detection speed has three gears: fast, medium and slow.
5. [usb rechargeable] this decibel meter has a built in 2000mah lithium battery power supply, and is equipped with a 10ft usb charging cable, you can charge easily.
how to use:
take out the product, install and use.
specification:
item type: decibel meter
material: abs
display method: led screen
atmospheric pressure: 12.5psi to 15.4psi
sampling time: 0.3s
detection temperature range: 14℉ to 122℉
storage temperature: 14℉ to 140℉
working environment storage humidity: 10%-80%
detection humidity range: 20% to 85% (accuracy: 5%)
charging: 1000ma 5v dc
battery: 1 x 2000mah (built in)
unit: dba
measuring range: 30-130 dba
accurate: ±1.5dba
frequency range: 50hz to 8.5khz
frequency weighting: a
screen display: 0.1 dba
noise meter level (unit: db):
green 1: 55.0 or less
green 2: 65.0 to 55.0
orange 1: 75.0 to 65.0
orange 2: 85.0 to 75.0
red 1: 95.0 to 85.0
red 2: above 95.0
grade of temperature smiling face (unit: ℉):
green: 68-8