{"product_id":"professional-grade-noise-meter-high-precision-decibel-meter-30-130-db-handheld-sound-level-meter-and-noise-detector","title":"Professional-grade noise meter | High-precision decibel meter (30–130 dB) | Handheld sound level meter and noise detector","description":"\u003cp\u003eI. Product Overview\u003cbr\u003eThe BAOLIAN BL-72A Professional-Grade Sound Level Meter is a high-precision, handheld decibel meter designed specifically for the accurate measurement of environmental noise. Whether you need to measure noise in the home, the acoustic environment of an office, the operating noise of equipment in an industrial workshop, or urban traffic noise, the BL-72A provides fast, accurate and reliable measurement data.\u003c\/p\u003e\n\u003cp\u003eThe BL-72A features a capacitive microphone and a metal vented design, with a built-in high-precision sensor and dual internal and external protection, ensuring safe, non-destructive and highly accurate measurements. With a measurement range spanning 30 dBA to 130 dBA and an accuracy of ±1.5 dBA, it is suitable for all scenarios, from everyday domestic use to industrial-grade noise monitoring.\u003c\/p\u003e\n\u003cp\u003eII. Six Major Advantages\u003cbr\u003e1. Condenser Microphone · Precise Sound Capture\u003cbr\u003eEquipped with a high-sensitivity condenser microphone sensor and a metal vented design, featuring dual internal and external protection, it accurately captures sound signals for more reliable, non-destructive measurements.\u003c\/p\u003e\n\u003cp\u003e2. Wide Range and High Accuracy · 30–130 dBA\u003cbr\u003eWith a measurement range spanning 30 dBA to 130 dBA and an accuracy of up to ±1.5 dBA, it can accurately measure everything from a whisper to industrial noise.\u003c\/p\u003e\n\u003cp\u003e3. Backlit Large Display · No Fear of Darkness\u003cbr\u003eEquipped with a backlit display, the text is clearly visible and the response is sensitive, allowing data to be read easily even at night or in dimly lit environments.\u003c\/p\u003e\n\u003cp\u003e4. Data Hold · One-Button Lock\u003cbr\u003eSimply press the ‘HOLD’ button to lock the current measurement value; press it again to resume normal operation, facilitating recording and comparison.\u003c\/p\u003e\n\u003cp\u003e5. Fast Response · Real-time Measurement\u003cbr\u003eSupports rapid sampling at 2 times per second, displaying test results quickly and accurately to capture dynamic noise changes.\u003c\/p\u003e\n\u003cp\u003e6. Intelligent Power Saving · Automatic Shutdown\u003cbr\u003ePress the power button briefly to switch on; the device automatically shuts down after approximately 10 minutes of inactivity, saving energy and extending battery life.\u003c\/p\u003e\n\u003cp\u003eIII. Technical Specifications\u003cbr\u003eParameter    Specifications\u003cbr\u003eProduct Model    BAOLIAN BL-72A\u003cbr\u003eMeasurement Range    30 dBA to 130 dBA\u003cbr\u003eMeasurement Accuracy    ±1.5 dBA\u003cbr\u003eMicrophone Type    Condenser microphone (with windscreen)\u003cbr\u003eFrequency Weighting    A-weighted mode (matches human hearing characteristics)\u003cbr\u003eResponse Mode    Selectable: Fast response \/ Slow response\u003cbr\u003eSampling Rate    2 times per second\u003cbr\u003eDisplay Type    Backlit LCD display\u003cbr\u003eData Hold    One-touch ‘HOLD’ lock\u003cbr\u003ePeak Value Recording    MAX peak value recording\u003cbr\u003eAuto Power-off    Automatic power-off after 10 minutes of inactivity\u003cbr\u003ePower Supply    Battery-powered (low battery warning)\u003cbr\u003eDimensions    160 mm × 46 mm\u003cbr\u003eWindscreen    Foam windscreen (to prevent wind noise interference during outdoor measurements)\u003c\/p\u003e\n\u003cp\u003eIV. Common Noise Level Reference\u003cbr\u003eTo help you quickly understand the meaning of the measurement values:\u003cbr\u003eDecibel Range    Perceptual Description\u003cbr\u003e0–20 dB    Very quiet, barely perceptible\u003cbr\u003e20–40 dB    Quiet, like a soft murmur\u003cbr\u003e40–60 dB    Normal, typical indoor conversation level\u003cbr\u003e60–70 dB    Noisy, harmful to the nerves\u003cbr\u003e70–90 dB    Very noisy, nerve cells are damaged\u003cbr\u003e90–100 dB    Intense noise; hearing damage\u003cbr\u003e100–120 dB    Unbearable; exposure for one minute causes temporary deafness\u003cbr\u003eAbove 120 dB    Severe or total deafness\u003cbr\u003eV. Applications\u003cbr\u003eThe BL-72A mini sound level metre offers multi-directional noise measurement and stable performance, making it suitable for a wide range of noise detection scenarios:\u003c\/p\u003e\n\u003cp\u003e🏠 Domestic environments\u003cbr\u003eMonitoring sleep noise in bedrooms\u003cbr\u003eDetecting noise from operating household appliances (air conditioners, fridges, washing machines, etc.)\u003cbr\u003eGathering evidence for neighbourhood noise complaints\u003c\/p\u003e\n\u003cp\u003e🏢 Offices and study areas\u003cbr\u003eAssessing office noise levels\u003cbr\u003eMaintaining quiet environments in libraries and classrooms\u003cbr\u003eTesting the acoustic environment in meeting rooms\u003c\/p\u003e\n\u003cp\u003e🏭 Industry and commerce\u003cbr\u003eMonitoring noise from operating equipment in factory workshops\u003cbr\u003eWorkplace safety compliance checks\u003cbr\u003eNoise control in shopping centres and warehouse areas\u003c\/p\u003e\n\u003cp\u003e🚗 Transport and Urban Areas\u003cbr\u003eUrban environmental noise detection\u003cbr\u003eCar\/vehicle noise detection\u003cbr\u003eNoise detection in stairwells and residential communities\u003c\/p\u003e\n\u003cp\u003e🏗️ Construction Sites\u003cbr\u003eReal-time noise monitoring at construction sites\u003cbr\u003eEnsuring construction noise complies with environmental standards\u003c\/p\u003e\n\u003cp\u003e🎵 Entertainment and Audio\u003cbr\u003eAudio system calibration\u003cbr\u003eMusic recording environment assessment\u003cbr\u003eDecibel measurement at public events\u003c\/p\u003e\n\u003cp\u003eVI. User Guide (How to Use)\u003cbr\u003ePower on: Press the power button briefly to switch on\u003cbr\u003eMode selection: Select A-weighted mode (matches human hearing) or fast\/slow response mode according to measurement requirements\u003cbr\u003eMeasurement: Point the microphone at the sound source to read decibel values in real time\u003cbr\u003eData hold: Press the ‘HOLD’ button lightly to lock the current reading\u003cbr\u003ePeak value recording: Press the ‘MAX’ button to record the highest decibel value during measurement\u003cbr\u003eAuto-shutdown: The device automatically switches off after 10 minutes of inactivity to save energy\u003c\/p\u003e\n\u003cp\u003eVII. Why Choose the BAOLIAN BL-72A?\u003cbr\u003e✅ Professional-grade quality — Industrial-grade design, stable and reliable performance\u003cbr\u003e✅ Precise measurement — Capacitive microphone + high-precision sensor, ±1.5 dBA accuracy\u003cbr\u003e✅ Portable and user-friendly — Compact, handheld design, operable with one hand\u003cbr\u003e✅ Multi-functional integration — Data hold, peak value recording, fast\/slow response modes, backlit display\u003cbr\u003e✅ Wind-resistant design — Foam windscreen ensures outdoor measurements are free from wind noise interference\u003cbr\u003e✅ Long battery life — Energy-saving auto-shutdown design with low battery warning\u003c\/p\u003e\n\u003cp\u003ePackage Contents\u003cbr\u003eBL-72A Sound Level Meter × 1\u003cbr\u003eFoam windscreen × 1\u003cbr\u003eUser manual × 1\u003c\/p\u003e","brand":"dinoinbox","offers":[{"title":"Default Title","offer_id":48492369084570,"sku":"MH02827","price":27.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/8748\/7130\/files\/ScreenShot_2026-06-22_113036_580.png?v=1782099089","url":"https:\/\/www.dinoinbox.com\/en-ca\/products\/professional-grade-noise-meter-high-precision-decibel-meter-30-130-db-handheld-sound-level-meter-and-noise-detector","provider":"dinoinbox","version":"1.0","type":"link"}