Feature:1. Scientific \u0026 Ergonomic Design: Encased in shock-absorbing rubber for enhanced durability, drop resistance, and a comfortable grip, ensuring reliable performance even in demanding field conditions. High sensitivity sensing probe and sponge ball windshield design for fast response and high accurate probe, handing over professional work to professional instruments.2. Integrated Multifunctionality: Combines unit conversion, auto-ranging, Max/Min display, BT communication, data locking functions for comprehensive, user-friendly sound level assessment. Equipped with thoughtful digital LCD backlit screen for easy data reading, easy to cope with strong light, night and other harsh environments.3. A-weighting/C-weighting: Accurately emulates the frequency response of human hearing for low-intensity (\u003c55 dB) and high-intensity mechanical noises, ensuring reliable measurement under diverse acoustic environments.4. Fast/Slow Mode Selection: Seamlessly captures fluctuating transport noise with a responsive 125 ms FAST mode or measures stable noise levels with a 1000 ms SLOW mode, presenting the effective value for precise analysis.5. Versatile Applications \u0026 Enhanced Convenience: This instrument caters to a broadrange of uses, including noise engineering, quality control, film production, construction, automotive testing, and educational settings, delivering professional-grade results with lasting cost-effectiveness.Specification:This sound level meter combines A-weighting/C-weighting, fast/slow mode adjustable, unit conversion, auto-ranging, Max/Min display, BT communication, data locking and a clear LCD screen for comprehensive, user-friendly sound level assessment. Wide applications, suitable for noise engineering, quality control, film production, construction, automotive testing, and educational settings, delivering professional-grade results with lasting cost-effectiveness.Features:Scientific & Ergonomic Design: Encased in shock-absorbing rubber for enhanced durability, drop resistance, and a comfortable grip, ensuring reliable performance even in demanding field conditions. High sensitivity sensing probe and sponge ball windshield design for fast response and high accurate probe, handing over professional work to professional instruments.Integrated Multifunctionality: Combines unit conversion, auto-ranging, Max/Min display, BT communication, data locking functions for comprehensive, user-friendly sound level assessment. Equipped with thoughtful digital LCD backlit screen for easy data reading, easy to cope with strong light, night and other harsh environments.A-weighting/C-weighting: Accurately emulates the frequency response of human hearing for low-intensity (<55 dB) and high-intensity mechanical noises, ensuring reliable measurement under diverse acoustic environments.Fast/Slow Mode Selection: Seamlessly captures fluctuating transport noise with a responsive 125 ms FAST mode or measures stable noise levels with a 1000 ms SLOW mode, presenting the effective value for precise analysis.Versatile Applications & Enhanced Convenience: This instrument caters to a broadrange of uses, including noise engineering, quality control, film production, construction, automotive testing, and educational settings, delivering professional-grade results with lasting cost-effectiveness.Specifications:Name: Noise Decibel TesterMaterial: plasticsType: ZL82A, ZL82B (optional)Battery type: 3 * AAA battery (ZL82A, not included), 1000mAh lithium battery (ZL82B, included) (according to your selection)Measuring ranges: 30-130dBSampling rate FAST: 125msSampling rate SLOW: 1secAccuracy: ±1.5dBFrequency response ranges: ±30Hz-8KHzResolution: 0.1dBA-weighting/C-weighting: yesAnalogue displey: yesData hold: yesMaximum/minimum value: yesAutomatic shutdown: yesLow voltage indication: yesPackage size: 185 * 92 * 44mm / 7.28 * 3.62 * 1.73inPackage weight:ZL82A: 245g / 8.64ounceZL82B: 282g / 9.95ouncePacking List:1 * Noise Decibel TesterPackage List:1 * Noise Decibel Tester