School Office Digital Sound Level Meter Noise Meter dB USB with Storeage 

Features:

High performance

Built-in capacitive microphone sensor, three conductive layers determine provide quick frequency response and excellent sensitivity, for lighter diaphragm and faster response speed.

Digital display

Equipped with three 3.0-inch high-definition digital tubes, showing clearly and directly the measuring data on the 3-digits screen.

Quick response

Support ultra-fast response time and rate, , with measuring angle of 30-130dB and accuracy of 1.5dB.

Alarm function

Build-in alarm reminder, you can set and adjust and alarm value and lower limit freely. When alarming, the indicator light flashes, accompanied by a buzzing sound, with adjustable alarm time of 6-120s, and volume of 1-3 levels.

Easy to use

Wall-mounted design, the sound-level meter can be hung on the wall to save the space and work continuously, simply powered by a USB cable.

Specifications:

Type: digital noise meter

Material: ABS

Item Color: black

Measuring Range: 30-130dB

Accuracy: +1.5dB (reference sound pressure level, 94dB/1KHz)

Frequency Range: 31.5-8.5KHz

Frequency Weighting: A

Response Time: fast

Microphone: 6mm capacitance microphone

Display: 3pcs 3-inch digits display

Reslution: 0.1dB (less than 100dB); 1dB (more than 100dB)

Alarm Reminder: support

Alarm Output: support

Power Supply: DC 5V/1A (USB)

Operation Conditions: 0-40 degrees Celsius, 10-80% RH

Storage Conditions: -10-60 degrees Celsius, 10-70% RH

Storage Function: 2secs/time, can be stored for a year

Communication: connecting PC via USB

Size: 21*13*3cm/8.25*5.11*1.18inch(L*W*H)

Weight: 611g/21.55oz

1*digital noise meter
1*USB cable
1*user manual
1*package box