Protmex Sound Level Meter, Dual Mode db Meter Decibel Meter Noise Level Meter 30-130dB Measure with Fast/Slow Selection, Backlight, Max and Data Hold Function, A/C Mode PT6708(Batteries Included)

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About Protmex Sound Level Meter, Dual Mode Db Meter

The Sound Level Meter is an instrument used to measure the ambient sound level, such as sound level around factories, workshops, schools, residential, offices, road, audio etc. It also can be appropriate for noise engineering, product quality control, heath prevention, etc. With power saving and high-reliability circuit design, well-designed high-efficiency power supply circuit makes the batteries more durable. Specifications ● Sound pressure accuracy: ± 1.5 dB (sound pressure standard, 94 dB @ 1KHz). ● Sound pressure accuracy: ±5 dB (sound pressure standard, 94 dB @ 8KHz). ● Sound pressure frequency response: 30Hz - 8KHz. ● Dynamic range of sound pressure: 50 dB (for each measurement gear level). ● Sound pressure measurement scope: 30-130 dBA, 35-130 dBC. ● Sound pressure frequency weighting characteristics: A and C characteristics. ● Dynamic characteristic of sound pressure: FAST 125ms, SLOW 1sec ● Microphone: polarized capacitive microphone. ● Digital display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/sec. ● Analog bar display: Each analog bar represents 1 dB, sampling rate is 20 times/sec. ● Measurement gear level: 30-80 dB, 40-90 dB, 50-100 dB, 60—110 dB, 70—120 dB, 80-130 dB, 6 gear levels in total. ● Automatic shifting gear level: microcomputer will automatically select the best gear level in the range from 30 to 130 dB. ● Below or above limit prompt: indicated with “UNDER” or “OVER” display. ●Power supply:4x 7th batteries of 1.5V each. ●Operating temperature:0 ~ +40℃ ●Operating temperature:10 ~ 80%RH ●Storage temperature:-10 ~ +60℃ ●Storage humidity:10 ~ 70% RH ● Accessories: Headphone plug, operating manual, cotton ball Power Supply: 4x1.5V AAA Batteries (Not Included) Product Size: 193 (L) × 60(W) × 29 (H) mm Product Weight: 187g Packing size: 230*110*55mm Packing weight: 335g Package include: 1*