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Want to test the sound level? Need to know the noise level? Try our digital sound level meter. It’s featured with wide measuring range (30-130dB). It’s portable and easy to use as a handy instrument for sound quality control in factory, office, home, school and construction site.Features:This Audio DB Meter complies with IEC651 Type 2 and ANSI S1.4 Type 2, with the measuring scope from 30 to 130 dB and automatic shifting function, A and C Frequency Weighting mode selection and High speed(FAST)/Low speed(SLOW) response rate selection.The mini handheld digital sound level reader is compact, lightweight, and easy to use, it is not only extremely wear-resisting, but also elegant.The output of AC and DC analog signal can be connected to frequency analyzer or X-Y axles recorder for statistic analysis of data.Features with backlight feature, it is appropriate for gathering the sound data at night. And auto power off function is provided, high-reliability and well-designed high-efficiency power supply circuit make the battery more durable.Portable and easy to use, suitable for checking, monitoring or controlling the sound level for personal, families, business, studies, industrial, etc.Specifications:Material: ABS plasticAccuracy: ТБ1.5 dB (based on the standard sound source, 94dB @ 1KHz)Frequency Response Range: 31.5Hz~8KHzDynamic State Range: 50dBMeasurement Range: 30~130dBA, 35~130dBCFrequency Weighting Character: A weight and C weightDynamic Characteristic of Sound Pressure: FAST 125ms, SLOW 1secMicrophone: 6mm capacitor microphoneDigital Display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/secDynamic Scale Display: 1 scale equals 2dB or 1dB, sampling frequency 2 times/secDynamic Scale Shift: 30~130dB, 30~80dB, 50~100dB, 80~130dBOverload Display: „UNDER” or „OVER” in display screenAC Signal Output: 0.65Vrms for each shift and full scale, the output of impedance around 600ohmDC Signal Output: 10mV/dB, the output of impedance around 100ohmPower Supply: 3 * 1.5V AAA battery (NOT included)Operating Temperature & Humidity: 040т„ƒ / 32104т„‰ (10%80%RH)Storage Temperature & Humidity: -1060т„ƒ / 14140т„‰ (10%70%RH)Item Size: Approx. 215 * 64 * 27mm / 8.46 * 2.52 * 1.07inItem Weight: Approx. 178g / 6.29ozPackage Weight: Approx. 336g / 11.87ozPackage Size: Approx. 23.3 * 18 * 5.5cm / 9.18 * 7.09 * 2.17inPackage List:1 * Sound Level Meter1 * User Manual (English) 1) We accept Alipay, West Union, TT. All major credit cards are accepted through secure payment processor ESCROW.2) Payment must be made within 3 days of order.3) If you can’t checkout immediately after auction close, please wait for a few minutes and retry Payments must be completed within 3 days.1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO)2. Orders processed timely after the payment verification.3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address.4. The images shown are not the actual item and are for your reference only.5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season.6. If you have not received your shipment within 30 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction!7. Due to stock status and time differences, we will choose to ship your item from our first available warehouse for fast delivery.8. Delivery Time:1. You have 7 days to contact us and 30 days to return it from the date it was received. If this item is in your possession more than 7 days, it is considered used and WE WILL NOT ISSUE YOU A REFUND OR REPLACEMENT. There are NO EXCEPTIONS! Shipping cost is bear by both seller and buyer in half.2. All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return, and your po#.3. We will refund YOUR FULL WINNING BID AMOUNT, upon receipt of the item in its original condition and packaging with all components and accessories included, AFTER BOTH Buyer and Seller cancel the transaction from aliexpress. OR, you may choose to have a replacement.4.  We will bear all the shipping cost if the product(s) is (are) not as advertised.1. 12 months Manufacturer`s limited Warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty.2. Defective items MUST BE reported and returned within the warranty period (and in the original packaging, if possible). You must tell us what the defect is and give us your order number. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN EXPIRED WARRANTY.You agree to all of the above-listed policies upon ordering on aliexpress!We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.It is impossible to address issues if we do not know about them!