VLIKE LCD Digital Audio Decibel Meter Sound Level Meter Noise Level Meter Sound Monitor dB Meter Noise Measurement Measuring 30 dB to 130 dB A/C Mode (Batteries Not Include)

VLIKE LCD Digital Audio Decibel Meter Sound Level Meter Noise Level Meter Sound Monitor dB Meter Noise Measurement Measuring 30 dB to 130 dB A/C Mode (Batteries Not Include)

• The sound level meter is an instrument used to real-time measure the sound level,such as sound level around factories,workshops,schools,residential,offices,road,audio etc (Battery not include), Can not keep and generate a report directly from the device
• It also can be appropriate for noise engineering,product quality control,health prevention and treatment,etc.This audio noise measure device is a great tool for checking, monitoring or controlling and test the sound level of any environments. It is widely applicable for personal, families, business, studies, industrial and etc
• With the measuring scope from 30 to 130dB and shifting function. Digital display,good anti-interference performance,power saving
• With the backlight feature,it is appropriate for gathering the sound data at night.Backlight auto power off function is provided.With power saving and high-reliability circuit design,well-design high-efficiency power supply circuit makes the batteries more durable
• Composite material injection molding process is adopted for casing with anti-drop structure design.It is not only extremely wear-resisting,but also elegant,It’s a mini handheld portable sound level reader

This sound level meter complies with IEC651 type 2 and ANSI S1.4 type 2. <br> It could be called as DB reader, phonometer or SPL meter,accumulate sound level value data for noise dosimeter, can be used as a noise monitor testing sound intensity to reduce Noise pollution,avoiding the risk to hearing damage.<br>But it is account for the relative loudness perceived by the human ear.The value will fluctuate according to the different distance sound source. <br><br> <b>Specifications: </b><br> Sound pressure accuracy: ±1.5 dB (sound pressure standard, 94 dB @ 1KHz).<br> Sound pressure accuracy: ±5 dB (sound pressure standard, 94 dB @ 8KHz).<br> Sound pressure frequency response: 30Hz - 8KHz. <br> Dynamic range of sound pressure: 50 dB (for each measurement gear level).<br> Sound pressure measurement scope: 30-130 dBA, 35-130 dBC. <br> Sound pressure frequency weighting characteristics: A and C characteristics. <br> Dynamic characteristic of sound pressure: FAST 125ms, SLOW 1sec <br>Maximum (MAX)locking function:Yes<br> Microphone: polarized capacitive microphone. <br> Digital display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/sec. Analog bar display: Each analog bar represents 1 dB, sampling rate is 20 times/sec. <br> Measurement gear level: 30-80 dB, 40-90 dB, 50-100 dB, 60¡110 dB, 70¡120 dB, 80-130 dB, 6 gear levels in total. <br> Automatic shifting gear level: microcomputer will automatically select the best gear level in the range from 30 to 130 dB.<br> Below or above limit prompt: indicated with "UNDER"± or "OVER" display. <br> Power supply:4 AAA batteries 1.5V<br><br> <b>Package list: </b><br> 1 * Sound Level Meter(Batteries not include)<br> 1 * User Manual<br><br> <b>Note:</b> Do not use the meter in hot,humid environment. If you want to calibrate it , it needs Primary standard acoustic source, acoustic environment,Normally only the third testing organization or the accredited laboratory could do it. <br>