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Decibel DB 7 Range Sound Level Audio Noise Meter 　 100% Brand New It can be used for pubic security in airport ,railway stations ,docks, prisons ,customs and frontier defense as well as quality control of medicine ,food and other commodities. With very low power consumption, this detector can work for over 40 hours continuously LED power indicator Beep sound when metal detected Features: Seven sound-level ranges: allow measurements from 50---126 DB. A and C weightings: lets you check compliance with safety regulations as well as make acoustic analysis. Slow and fast response settings: let you check peak and average noise levels. Built in battery condition indicator. Phono-type output jack: for connection to home theater or test equipment. Threaded insert :lets you attach the meter to a camera tripod for increased accuracy. 60 dB: 50 TO 66 dB 70 dB: 60 TO 76 dB 80 dB: 70 to 86 dB 90 dB: 80 to 96 dB 100 dB: 90 to 106 dB 110 dB: 100 to 116 dB 120 dB: 110 to 126 dB Accuracy: +/- 2 dB @ 114 dB Standard: 0 dB = 0.0002 u bar Signal Output: 1.0 volt (peak) minimum into open circuit, with full scale meter deflection at 1 kHz Load Impedance: 10 kOhms minimum Distortion: Less than 2% at 1 kHz, 0.5-volt Microphone: Electric condenser; omni directional Size (HWD): 6-5/16 x 2-7/16 x 1-3/4 Inches (160 x 62 x 44 mm) Weight: 6.6 oz (about 185 grams) Package Included: 1x 7 Range Sound Level Audio Noise Meter Decibel DB 1 X USER MANUAL 　 　 Shipping Payment Most orders ship within 1-3 business days on payment received (except Holiday). Item shipped from Hong Kong using airmail by Hong Kong Post Office, reach most of the countries within 7 to 14 business days. Delivery time depends on destination and other factors, it may takes up to 20 business days. You are highly recommended to buy insurance for registered airmail to secure your item. For insured item only, tracking no. will be given for customer to check the shipping status online. We will send you an invoice immediately after the auction ends. After we ship the item, we will email you the shipping information, as well as your tracking number (for insured item only). We accept only, it is fast, easy and safe. Please do not send us Personal Check / Money order. Product will be shipped only if full payment, including full shipping charge, has been received. Please note your postage & shipping charge cover the shipping / postage cost, handling and packing. If you are bidding on multiple items we will apply the multiple item shipping discount. Please email us before you make the payment. Serious Buyer Only! Please place bid or "Buy it now" only if you agree the price and terms of the product and no argument after the auction end. We will file with ebay to collect our fees if you do not pay for the auction within 14 days. Non-paying buyers will be reported a negative feedback on eBay. Returns 　 All items sold are brand new. If you receive a wrong or defective item please email us within 7 days from the date you receive the product: Later than 7 days the item cannot be accepted for return. If the order is defective we will send replacement to you and no additional charge. If the order is not found to be defective we will refund the product cost to you only. Shipping and handling are not refundable. All returns must include all original items undamaged, in re-saleable condition, all original packaging including manuals, warranty forms, etc. Software sales are not refundable. 　 　
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