Features: Display: Digital Display & Analog Bars Display Auto range: Reaction rate: Fast/Slow Selection MAX HOLD: Back light: Low battery indication: Power Supply: 4 * 1.5V AAA Batteries(Not included) Category: CE RoHS Specifications: Sound pressure accuracy: ?à 1.5 dB (sound pressure standard、 94 dB @ 1KHz). Sound pressure accuracy: ?à5 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 dB A、 35-130 dB C. 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、 60110 dB、 70120 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. Package size: 23 * 11 * 6cm / 9.1 * 4.3 * 2.3in Package weight: 329g / 11.6oz Package list: 1 * HYELEC MS6708 Digital Sound Level Meter 1 * English Manual"
