30130dBA sound level meter, professional decibel meter with backlit display (9V battery included)

[Sensitive Sensor] 0.5-second response time, non-contact. Measures noise levels under all conditions and quickly displays precise measurement results. [LCD Display] Large, backlit LCD display, easy to read even at night. Low radiation, easy on the eyes. [Precise Measurement] Measuring range 30–130 dBA; accuracy ± 1.5 dB with a resolution of 0.1 dB. [Multifunction] Data hold function; measurement of maximum/minimum sound level. The automatic shut-off after 15 minutes features an alarm function that triggers when the speech level reaches 130 dB. [Power supply] Operates with a 9V battery (included) Frequency weighting: A Measuring range: 30 dB–130 dB Accuracy: ± 1.5 dB Resolution: 0.1 dBA Response time: 0.5 seconds Operating temperature: 0–40 °C (32–104 °F) Operating humidity: 10–90 % RH Storage temperature: -10–60 °C (14–140 °F) Storage humidity: 10–90 % RH Storage: 10 ~ 70% RH Dimensions: Approx. 170 (W) x 58 (D) x 35 (H) mm (6.7 x 2.3 x 1.4 in) Weight: Approx. 107 g Power Supply: One 9V battery Main Features Data Hold Function Max/Min Display Automatic Shut-Off after 15 Minutes Large LCD Display Package Contents: 1 x Digital Sound Level Meter 1 x 9V Battery How loud is too loud? According to government studies, the safe exposure limit is 85 decibels for eight hours per Day. Prolonged exposure to loud noises can damage your hearing. 20 dB: very quiet, 40 dB: faint, 60 dB: moderately loud, 85 dB: limit 90 dB: loud, 100 dB: very loud 110 dB: very quiet, 120 dB: dangerous This decibel meter is ideal for industrial and private use. It effortlessly measures the noise level of household appliances, neighbors' pets, construction sites, factories, offices, road vehicles, etc. Measurement Instructions: 1) When used outdoors, a windproof ball bearing should be attached to the device head to prevent wind interference. 2) When measuring the sound level at point A, the influence of other noise sources must be taken into account. 3) Take several measurements to obtain the most stable reading possible. Note: 1) Remove the 9V battery if you will not be using the device for an extended period. 2) Do not use the device in environments with high temperatures or high humidity. Quantity: 1 piece Color: Yellow/Black Dimensions: 170*58*35 (mm)