1. High precision: Using a capacitive microphone, the measurement range can reach 30-130dB, and the noise accuracy is 2.0d, helping you accurately capture the decibels of noise; 2. Adjustable fast and slow modes: Fast and slow mode time weighting, fast mode can reach up to 125ms per second, slow mode can reach up to 1000ms per second; 3. MAX value reset: After measurement, the maximum value can be automatically locked and reset by short pressing, making it easy to use; 4. Sponge ball protective cover: An external sponge ball protective cover can the accuracy of within a certain wind speed range and also provide protection for the microphone; 5. Humanized design, widely used: Both sides are made of soft rubber material, providing a comfortable grip. It can also be applied to various scenarios such as offices, libraries, car noise, program , factory equipment, etc. Product Name: High precision noise detector Measurement range: 30dB-130dB Sampling rate FAST: 125ms Sampling rate SLOW: 1000ms Noise accuracy: 2.0dB Reference sound pressure standard: 94dB/1KHz Frequency response: 31.5Hz-8KHz Resolution: 0.1dB Power supply: 2 x AAA batteries(not included) Working current:8mA Working temperature: 0C-40C Working humidity: 80% RH Storage temperature: -20C-60C Storage humidity:75% RH Due to different factory batches, the product words are different, and the product accessories have slight differences in color and appearance, but it does not affect normal use Colour:As Shown Material:ABS Package Contents: 1set x noise meter decibel detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.