Features: <br> <br>It can convert ambient sound into electrical signals, process data and displays results on LCD. <br>The product is compact and light weight, convenient to carry. <br>White backlight, LCD digital display, easy to read. <br>Equipped with sponge ball to filter-out unwanted signals. <br>Great tool for monitoring noise levels in hotels, conference halls, home theater, hospitals, and any other noise sensitive environments. <br> <br>Specifications: <br>Color: White <br>Measuring Range: 30 ~ 130dB <br>Accuracy: ±1.5dB <br>Resolution: 0.1dB <br>Frequency Range: 31.5HZ ~ 8KHZ <br>Frequency Weighting: A <br>Sampling Frequency: 2 times/sec <br>Digital Display: 4 digits <br>Microphone: 1/2" Condenser microphone <br>Operating Temperature: 0~40°C (32 ~ 104 °F) <br>Operating Humidity: 10 ~ 80%RH <br>Storage Temperature: -10~60°C (14 ~ 140 °F) <br>Storage Humidity: 10-70%RH <br>Power Supply: 3 x 1.5V AAA Battery (included) <br>Size: Approx. 14.2 x 5 x 2.5cm / 5.59 x 1.97 x 0.98inch <br>Weight: Approx. 148g <br> <br>Package Included: <br>1 x Sound Level Meter <br>3 x 1.5V AAA Battery <br>1 x Manual<br>1、It can convert ambient sound into electrical signals, process data and displays results on LCD <br>2、The product is compact and light weight, convenient to carry <br>3、White backlight, LCD digital display, easy to read <br>4、Equipped with sponge ball to filter-out unwanted signals <br>5、Great tool for monitoring noise levels in hotels, conference halls, home theater, hospitals, and any other noise sensitive environments