Microphone type: polarized capacitive microphone.

• Sound pressure accuracy: ± 1.5 dB (sound pressure standard, 94 dB @ 1 KHz).

• Sound pressure frequency response: 30Hz - 8 KHz.

• 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.

• Dynamic characteristic of sound pressure: FAST: 125ms, SLOW: 1sec

• 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 range: 30-80 dB, 40-90 dB, 50-100 dB, 60—110 dB, 70—120 dB, 80-130 dB, 6 ranges in total.

• Automatic shifting: microcomputer will automatically select the best gear level in the range from 30 to 130 dB.

• Below or above limit prompt: indicated by “UNDER” or “OVER”.

• Power supply: 4 x 1.5V AAA.

• Operating temperature: 32°F to 104°F (0 ~40 °C)

• Operating humidity: 10 ~80％ RH.

• Storage temperature: 10°F to 140°C (- 10 ~60 °F)

• Storage humidity: 10 ~70％ RH.

• Outside measurement: 7.6(L) x 2.4(W) x 1.14(H) (193 (L) × 60(W) × 29 (H) mm)

• Weight: about 7 oz. (200 g) including batteries.