LCD Digital Sound Meter DB 30 130dBA Noise Measuring Tool Tester with Max/Min/Data Hold Mode Audio Logger Detector Indicator Features: Large LCD display with switchable backlight for easy reading,convenient to use. Wide measurement from 30dB to 130dB,Resolution: 0.1dB,Accuracy: ±1.5dB. With maximumminimum value measurement and data hold function. Low battery indication,automatic & manual power off function. Equipped with sponge . Compact and ,convenient to hold and carry. Product Description: Product Want to test sound ? Need to know noise for sound ? this handy sound meter,it's featured with wide measuring that measures sound from 30dBA～130dBA. It can be widely used for sound in homes,,schools,factories,traffic,audio system,construction ,etc. Features: Large LCD display with switchable backlight for easy reading,convenient to use. Wide measurement from 30dB to 130dB,Resolution: 0.1dB,Accuracy: ±1.5dB. With maximum/minimum value measurement and data hold function. Low battery indication,automatic & manual off function. Equipped with sponge . Compact and light,convenient to hold and carry. Portable and easy to use,suitable for checking,or controlling sound for ,families,business,studies,industrial,etc. Specifications: Material: ABS Display: LCD display with switchable backlight Measuring:30~130dBA Accuracy: ±1.5dB Resolution: 0.1dB Frequency Response: 31.5Hz~8KHz Frequency Weighting Features: a weighting Sampling Frequency: 2 times/sec Microphone: 1/2" electret condenser microphone Operating Temperature: 0~40℃(10%~80%RH) Storage Temperature: -10~60℃(10%~70%RH) Supply: 3 * 1.5V AAA battery (NOT included) Auto Off: 10 minutes without any operation Case Size: Approx. 18.7 * 7.8 * 5cm / 7.4 * 3.1 * 2.0in Item Size: Approx. 49 * 30 * 159mm / 1.9 * 1.2 * 6.3in Item Weight: Approx. 110g / 3.9oz Package Weight: Approx. 179g / 6.3oz Packing List: 1 * Sound Meter 1 * User Manual (English) With maximumminimum value measurement and data hold function. Low battery indication,automatic & manual power off function. Large LCD display with switchable backlight for easy reading,convenient to use. Wide measurement from 30dB to 130dB,Resolution: 0.1dB,Accuracy: ±1.5dB. Equipped with sponge . Compact and ,convenient to hold and carry.