1、Large HD screen with backlight for clear readings and easy use at night, widely used in factory, transportation, car, baby room and audio system office 2、Measurement range: 30-130dBA, accuracy: ±1.5dB, resolution: 0.1dB, there will be a warning sign when the standard exceeds the standard 3、The Sound Level Tester locks the maximum sound decibels value and holds the current measurement readings 4、Features high precision sensors with three sensitive conductive layers and metal housing for durability and safe use 5、Comes with windshield design for filtering wind interference Description: DUKA FB1 Decibel Meter Mini Digital Sound Level Meter Range 30-130dB(A) Handheld Audio Noise Measure with LCD Screen Backlight MAX Data Hold Auto-off Features: Large HD screen with backlight for clear readings and easy use at night, widely used in factory, transportation, car, baby room and audio system office Measurement range: 30-130dBA, accuracy: ±1.5dB, resolution: 0.1dB, there will be a warning sign when the standard exceeds the standard The Sound Level Tester locks the maximum sound decibels value and holds the current measurement readings Features high precision sensors with three sensitive conductive layers and metal housing for durability and safe use Comes with windshield design for filtering wind interference Specification: Product name: Duka FB1 decibel meter Measuring range: 30~130dBA Accuracy: 1.5dB Frequency response: 31.5Hz~8KHz Frequency-weighted characteristics: A-weighted Resolution: 0.1dB Working temperature and humidity: 0~40℃, 10~80%RH Storage temperature and humidity: - 10~60℃, 0~90%RH Power supply: 3*1.5V AAA batteries Product size/weight: 50*30*159.5mm/80.08g Package size/weight: 18*8*5cm/200g Note: There is a little of difference according to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Package List: 1*Duka FB1 decibel meter 3*1.5V AAA batteries 1*DukaFB1 decibel meter 3*1.5V AAA batteries