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)

Description

This sound level meter complies with IEC651 type 2 and ANSI S1.4 type 2. 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.But it is account for the relative loudness perceived by the human ear.The value will fluctuate according to the different distance sound source. Specifications: Sound pressure accuracy: ±1.5 dB (sound pressure standard, 94 dB @ 1KHz). Sound pressure accuracy: ±5 dB (sound pressure standard, 94 dB @ 8KHz). Sound pressure frequency response: 30Hz - 8KHz. Dynamic range of sound pressure: 50 dB (for each measurement gear level). Sound pressure measurement scope: 30-130 dBA, 35-130 dBC. Sound pressure frequency weighting characteristics: A and C characteristics. Dynamic characteristic of sound pressure: FAST 125ms, SLOW 1sec Maximum (MAX)locking function:Yes Microphone: polarized capacitive microphone. 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. Measurement gear level: 30-80 dB, 40-90 dB, 50-100 dB, 60¡ª110 dB, 70¡ª120 dB, 80-130 dB, 6 gear levels in total. Automatic shifting gear level: microcomputer will automatically select the best gear level in the range from 30 to 130 dB. Below or above limit prompt: indicated with “UNDER”± or “OVER” display. Power supply:4 AAA batteries 1.5V Package list: 1 * Sound Level Meter(Batteries not include) 1 * User Manual Note: 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.