1. Compliant with standards: IEC61672, GB/T17181 standard level 1

2. Microphone: 1/2-inch pre polarized measurement condenser microphone

Sensitivity: 50mV/Pa Frequency: 10Hz~20kHz

3. Sound level measurement range (with 2 × 10-5 Pa as reference), measured with different microphones

The lower and upper limits of the quantity can be extended to 20dB (A) and 145dB

25dB～135dB(A) 30dB～135dB(C) 40dB～135dB(Lin)

4. Frequency weighting and frequency range: A weighting, C weighting, Lin: Z weighting,

Flat frequency response; The frequency range is 10Hz to 20kHz.

5. Time weighting and detection characteristics: F (fast), S (slow), maximum value retention

LMS detection, peak factor ≥ 10.

6. Built in filter: 1/3 octave band and 1/1 octave band, 30 sets of LED indicators.

1/3（Hz）：25,31.5,40,50,63,80,100,125,160,200,250,

315,400,500,630,800,1k,1.25k,1.6k,2k,2.5k,

3.15k,4k,5k,6.3k,8k,10k,12.5k,16k,20k

1/1（Hz）：31.5,63,125,250,500,1k,2k,4k,8k,16k

7. Range division setting: When the dynamic range is greater than 70dB, it automatically indicates over range and under range.

Range 1:5dB~75dB Range 2:35dB~105dB (reference range)

Range 3: 55dB~125dB Range 4: 75dB~145dB

8 Automatic measurement function: Leq、LAE、SD、Lmin、L95、L90、L50、L10、L5、Lmax、

1/3 and 1/1 spectrum analysis, reverberation time T60, effective perceived noise level of Lepn (communication software), and other arrays are automatically collected, stored, and printed.

9 Measurement time selection and clock: Man (manual timing), 10s, 1min, 5min, 10min, 20min, 30min, 1h, 8h, 24h.

Clock: year, month, day, hour, minute, second.

10 output interface: AC output maximum effective value of about 7V, output impedance of 600 Ω.

DC output: 0.25V~1.35V, (corresponding to 25dB~135dB) 0.1V/10dB.

Serial interface: RS232C can be connected to a matching printer (optional) and a computer (for real-time communication).

11 Display: 40mm × 70mm large screen LCD display with 4-digit display, resolution of 0.1dB, update rate once per second.

12 Calibration: 1000 Hz 94 dB, HS6020 Sound Level Calibrator.

13 Power supply: DC5V—8 V , 5 LR6 high-energy alkaline batteries with an external power input socket.

14 Dimensions: L × b × h: 320mm × 85mm × 70mm Mass: 700g

15 Working environment: Operating temperature: -10 ℃~50 ℃ Relative humidity: 20%~90% RH Atmospheric pressure: 86 kPa~106kPa

Basic configuration: HS5670A host, program CD, communication cable, hood, external power supply, carrying case, etc