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HABOTEST HT622A Digital Decibel Meter LCD Color Screen Handheld Noise Sound Level Meter with Tool Bag Range from 30-130dB(A) for School Classroom Kids(Battery Not Included)

HABOTEST HT622A Digital Decibel Meter LCD Color Screen Handheld Noise Sound Level Meter with Tool Bag Range from 30-130dB(A) for School Classroom Kids(Battery Not Included)

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[Wide Application] Used to measure the sound level of the environment such as factories, workshops, schools, residential buildings, office areas, traffic roads, audio and other occasions of the sound level. 
[Accurate Measurement] Large range from 30dB to 130dB; high accuracy of ±1.5dB(94dB@1KHz); and high resolution of 0.1dB.
[Fast/Slow Time Weighting] Select FAST(125ms) to capture noise peaks and noises that occur very quickly; select the SLOW(1sec) response to monitor a sound source that has a consistent noise level or to average quickly changing levels. 
[Practical Function] Press the Data Hold button to freeze the displayed reading; auto/manual range for accurate measurement; unit conversion between dB and SONE is available.
[User Friendly] Measures 7.59*2.36*1.14in and weighs 6.13oz, featuring compact and lightweight; and LCD HD color screen ensures clear visibility even in low-light area.

*Batteries are not included.
*Wind blowing across the microphone increases the noise measurement. Use the supplied windscreen to cover the microphone when applicable.
*Calibrate the instrument before each use if possible. Especially if the meter has not been used for a long period of time.
*Do not store or operate the instrument in areas of high temperature or humidity.
*Keep meter and microphone dry.
*Avoid severe vibration.
*Remove the battery when the meter is to be stored for long periods of time.
*A Frequency Weighting: The frequency response of the meter is similar to the response of the human ear. A weighting is commonly used for environmental or hearing conservation programs such as OSHA regulatory testing and noise ordinance law enforcement. Most noise measurements are performed using A weighting and FAST Response.

Range: 30-130dBA 
Frequency: 30Hz-8KHz
Accuracy: ±1.5dB(94dB@1KHz); ±5dB(94dB@8KHz)
Frequency Weighting: A/C weighting
Time Weighting: (FAST) 125ms; (SLOW) 1sec
Microphone: Electret condenser
Operating Conditions: 0-40℃, <80%RH
Auto Power Off: 10 minutes
USB Interconnection: Yes
Power Supply: 3 * 1.5V AAA(LR03)batteries(not included)

Color: Red
Material: ABS
Item Size: 19.5*6*3cm / 7.67*2.36*1.18in
Package Size: 22.7*11.5*4.5cm / 8.93*4.52*1.77in
Item Weight: 176g / 6.2oz
Package Weight: 309g / 10.89oz

Packing List:
1 * Sound Level Meter
1 * Bag
1 * User Manual(English)


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