-Sonomètre numérique Min Audio, Décibelimetro portable, Moniteur de décibels de bruit, Mesure DB, 30-130dB, TingSonomcirculation GVDA Digital Sound Level Meter Noise Tester Audio Level Meter 30-130dB Decibels Sonometro Sound Meter Decibelimetro Decibel Meter Noise Meter This sound level meter is used to measure the sound level of the environment, such as factory, workshop, school, residence, office area, traffic road, audio and so on. It is also suitable for noise engineering, product quality control, health prevention and control, etc. It can measure ambient temperature and humidity too. Product Features 1,Fast/slow time weighted selection 2,2.4 inch backlight display 3,Temperature unit °C/°F 4, car power off 5,Data hold function 6,Max/Min function 7,A/C weighted selection(only GD151B) 8,Low battery indication Product Details Sound range:30-130dBA(GD151A) Sound range:30-130dBA or 30-130dBC (only GD151B) Frequency: 30Hz-8KHz Dynamic range: 50dB Sound Accuracy:±1.5dB(); ±5dB () Frequency weighting: A weighting (GD151A) Frequency weighting: A weighting,C weighting(only GD151B) Time weighting: fast 125ms; slow 1sec Temperature range:-20°C-60°C(-4°F-140°F) Temperature accuracy:0°C-45°C(32°F-113°F)±1°C/2°F; Other ±1.5°C/3°F Humidity range:0.0%-99.9%RH Humidity accuracy:20%-80% ±5RH; Other ±6RH Auto power off:10 minutes Power:3*AAA battery Item Size: 142*58*26mm Item weight:about 114g