Feature:1. Digital Sound Level Meter: Polarized capacitive microphone responds quickly to large screen digital display multiple functions are measured in real time.2. Fast/Slow Dual Measurement Mode: FAST/SLOW time input , one-key switch.3. Detachable Battery Compartment Design: The rear cover can be detachable battery compartment, easy to change.4. LCD HD Backlight Digital Display: Black and white screen digital display large font reading clearly visible.5. Compact \u0026 Lightweight: Easy to operate with single, portable to carry around.6. Polarized Capacitive Microphone: Short response time strong anti-interference ability more accurate data acquisition.Specification:Features:Digital Sound Level Meter: Polarized capacitive microphone responds quickly to large screen digital display multiple functions are measured in real time.Fast/Slow Dual Measurement Mode: FAST/SLOW time input , one-key switch.Detachable Battery Compartment Design: The rear cover can be detachable battery compartment, easy to change.LCD HD Backlight Digital Display: Black and white screen digital display large font reading clearly visible.Compact & Lightweight: Easy to operate with single, portable to carry around.Polarized Capacitive Microphone: Short response time strong anti-interference ability more accurate data acquisition.Wide Applications: It can be used in factory, workshop, school, office, traffic road, and other places that required sound level test.Specifications:Model: HT602BMaterial: ABSSound Pressure:Range: 30-130dBA/30-130dBCAccuracy: ±1.5dB (94dB@1KHz); ±5dB (94dB@8KHz)Frequency Response: 30Hz-8KHzFrequency Weighting: A/C weightingTime Weight: FAST 125ms, SLOW 1 secAnalog Bar: YesOver Range: UL/OLAmbient Temperature: Range: -20~60 (-4~140)Accuracy: 0~45 (32~113); ±1.0; other: ±1.5Ambient Humidity:Range: 0~99.9%Accuracy: 20%~80%; ±3.0RH; other: ±4.0RHWet Buib Temperature: Range: -20~60 (-4~140)Accuracy: 0~45 (32~113); ±1.0; other: ±1.5Dew Point Temperature: Range: -50~60 (-58~140)Accuracy: 0~45 (32~113); ±1.0; other: ±1.5Backlight: YesData Hold: YesMax/Min: YesAuto Power Off: YesLow Battery Indication: YesPower Supply: 3 * 1.5V AAA battery (NOT included)Safety Rating: EN61326-1Item Size: 142 * 58 * 28mm / 5.59 * 2.28 * 1.10inItem Weight: 115g / 4.05ozPackage Weight: 194g / 6.84ozPackage Size: 18.5 * 9 * 5.5cm / 7.28 * 3.54 * 2.16inPackage List:1 * Sound Level Meter1 * Pouch1 * User Manual (English)Package List:1 * Sound Level Meter1 * Pouch1 * User Manual (English)