... , F/ S Response, A/ C Weighting 4,DC/AC Output Measuring Range30~130dBA 35~130dBCAccuracy±1.5dBFrequency Range31.5HZ-8.5KHZLinearity ... 651 TYPE2----B. US national standard: ANSI S1.4 TYPE2*Measuring range30~130 dBA35~130 dBC*Accuracy: +/-1.5 dB*Digit ... : 5 & 0.1 dBFeatures*Frequency response: 31.5Hz ~8.5KHz*Measuring level: 30~130, 40~90, 50~100, 60~110, 80~130 ...