Brand LCD 30-130dB Digital Sound Level Meter Portable Mini Noise Sound Frequency Tester in Decibels Retail Package GM1351    Description:  This sound level meter is very small and light. It is an ideal tool to measure Sound Pressure Level in decibels (dB). It is used for sound quality control  in factory, office, home, school, restaurant, hospital and construction site, etc.     Feature:  *Wide measurement range: 30~130dB  *Accuracy up to 1.5dB  *This unit was designed according to following standards:   ----A. International electrician committee standard: IEC PUB 651 TYPE2   ----B. US national standard: ANSI S1.4 TYPE2  *100% Brand New  *With modern, compact, portable design.  *Easy to use  *Frequency weighting characteristic: A  *Equipped with sponge ball to filter-out unwanted signals.  *Max reading hold  *Auto power off  *Auto backlight display  *Low battery indication  *Powered by 9V Battery (not included)  *Approved by CE/ROHS/FCC standard  *Under 1 year guarantee     Specification:  *Measuring range: 30dBA~130dBA  *Accuracy: ±1.5 dB  *Frequency range: 31.5Hz~8.5KHz  *Frequency weighting: A  *Digital Display: 4digits  *Resolution: 0.1dB  *Sample rate: 2 times/second  *Microphone: 1/2 inch electret condenser microphone  *Power supply: 9V Battery  *Operating condition: 0~40 10~80%RH  *Storage condition: -10~60 10~70%RH  *Weight: 144g (including battery)  *Dimension: 57*26*149mm     Package Included:  1 x Sound level meter      1 x Operation Manual  1 x Sponge Ball  These items come with Standard Packing: Blister + Card