<p>[Sensitive Sensor] 0.5s response time, no contact. Can measure the noise level under any circumstances, quickly display the accurate measurement result.</p> <p>[LCD Display] Large backlit LCD screen, easy to read at night. Low radiation, reduce eye damage.</p> <p>[Accurate Measurement] Measuring range 30 ~ 130dBA; Accuracy of +/- 1.5dB with 0.1dB resolution</p> <p>[Multi-function] Data hold function; Max / Min sound level measurement; The 15-minute auto power-off also has an alarm function when the voice level reaches 130 dB.</p> <p>[Power Supply] Powered by 9V battery (Included)</p> <p>Frequency Weighting: A</p> <p>Measuring Range: 30dB-130dB</p> <p>Accuracy within +/- 1.5dB</p> <p>Resolution: 0.1dBA</p> <p>Response Time: 0.5 seconds</p> <p>Operating Temperature: 0 ~ 40 ° C (32 ~ 104 ° F)</p> <p>Operating Humidity: 10 ~ 90% RH</p> <p>Storage Temperature: -10 ~ 60 C (14 ~ 140 F)</p> <p>Storage Humidity: 10 ~ 70% Humidity relative</p> <p>Dimensions: Approx. 170 (L) x 58 (W) x 35 (H) mm (6.7 x 2.3 x 1.4 inches)</p> <p>Weight: Approx. 107 g</p> <p>Power Supply: One 9V Battery</p> <p>Main Functions</p> <p>Data Hold Function</p> <p>Max/Min Display</p> <p>15 Minutes Auto Power Off</p> <p>Large LCD Display</p> <p>Package Contents:</p> <p>1x Digital Sound Level Meter</p> <p>1x 9V Battery</p> <p>How Loud Is Too Loud?</p> <p>Government research suggests the safe exposure limit is 85 decibels for eight hours a day. Your hearing can be damaged if you are continually exposed to loud sounds.</p> <p>20dB: very quiet, 40dB: soft,</p> <p>60dB: moderate, 85dB: borderline</p> <p>90dB: loud, 100dB: very loud</p> <p>110dB: very quiet, 120dB: dangerous</p> <p>This decibel meter is ideal for industry and home use. It can easily measure the noise level of household appliances, neighbor's pets, city construction, factories, offices, road cars, etc.</p> <p>Measurement Tips:</p> <p>1) When using the meter outdoors, please install a wind-resistant ball on the meter head to avoid the effects of wind.</p> <p>2) If you want to measure the sound level from A, you cannot ignore the influences of other sources.</p> <p>3) Please measure several times to get a relatively stable reading.</p> <p>Please note:</p> <p>1) Please remove the 9v battery if it is not used for a long time.</p> <p>2) Please do not use it in a high temperature or humidity environment.</p> <p>Number of products: 1 piece</p> <p>Color: yellow black</p> <p>Size: 170*58*35(mm)</p>