?Multi-function Sound Level Meter?This decibel meter uses a color backlit screen, and the three-color analog bar on the screen clearly indicates the noise value range, allowing you to easily read the measured value at night or in the sun. Spl meter is suitable for monitoring the noise level of homes, factories, schools, offices, and traffic roads. It can also be used in various fields such as noise engineering, quality control, shooting sites, and construction site noise. ?Condenser Microphone?Sound decibel meter uses a condenser microphone, which has the characteristics of high sensitivity and fast response. The measurement range of the dB meter is 30dB to 130dB, the accuracy is 1.5dB, and the frequency response is 31.5Hz~8KHz. And the condenser microphone is protected by a metal shell, which is safe and drop-proof. The sound meter is also equipped with a windproof ball, which can reduce the interference of wind noise on the microphone probe when used outdoors. ?A/C Weighting Mode?The noise meter has two modes: A-weighting and C-weighting. A-weighting simulates the frequency characteristics of low-intensity noise below 55dB of the human ear, which is suitable for environmental noise detection; C-weighting simulates the frequency characteristics of high-intensity mechanical noise, which is suitable for industrial noise detection. Choosing a more professional measurement method can make the measurement results more accurate. ?dB/SONE Measurement Unit?The sound level meter has two measurement units: dB and SONE. The dB unit measures the intensity of sound and is mainly used in sound engineering; the SONE unit measures the loudness of sound and is mainly used in the field of acoustics. The default unit of the sound level meter is dB when it is turned on. A short press can switch to SONE. You can choose a more appropriate measurement unit according to your needs. ?FAST/SLOW Response?The sound level meter has two response modes: FAST and SLOW. The FAST response is based on a 0.125s time constant and is generally used for non-steady-state and traffic noise with large fluctuations; the SLOW response is based on a 1s time constant and is generally used to measure steady-state noise. You can choose a more suitable response mode to measure according to the specific situation.