| accuracy class | Level 2 |
| meet the standard | GB/T 3785.1-2010/IEC61672-1:2013/ANSI S1.4-2014/JISC 1516-1:2014 |
| Standard microphone | Level 2 measurement microphone sensitivity/40mV/Pa |
| frequency response range | 20Hz-12.5kHz |
| Detector/Filter | Floating point digital signal processing, digital detectors and filters |
| measurement metrics | Lp,Leq,Lae,SD,Lmax,Lmin,LN(L95,L90,L50,L10,L5),Ldn,Ld,Ln 和24h测量 |
| Noise dose E | √ |
| Integral statistical analysis | Man (manual), 10s, 1m, 5m, 10m, 20m, 30m, 1h, 8h, 24h and Regular (hourly) 10s, 1m, 5m, 10m, 20m, 30m, 1h |
| time weighting | Fast (F), Slow (S), and Pulse (I) |
| data storage | 800 sets of data or 6 days and 24 hours of measurement values |
| data retrieval | Allow viewing of saved data |
| Data export | USB interface connected to computer |
| Frequency weighting | A weighting, C weighting, Lin (linear) |
| Range control | Automatic range or manual shifting |
| Standard measurement range | 30dB(A)~130dB (A)2 级 |
| Manual shifting 30dB~90dB/50dB~110dB/70dB~130dB |
| measurement upper limit | Sensitivity 5mV/Pa |
| background noise | <24dBA Level 2 |
| Electrical input characteristics | Maximum input voltage: 5Vrms (7.07Vpeak), preamplifier input impedance:>6G Ω |
| monitor | Large screen backlit LCD with dynamic bar graph displaying instantaneous sound level changes |
| Post processing software | have |
| Battery Type | 5xAA battery, capable of continuous operation for more than 10 hours |
| External power interface | Type C |
| External power supply voltage | 5VDC |
| host size | 270x90x32 |
| host weight | 360g (excluding battery) |
| output interface | Communication output, USB interface |
| clock | Built in clock |
| Operating environment | Temperature -10 ° C~50 ° C, humidity 20% RH-90% RH |
| Standard Configuration | host |
| Instruction Manual |
| Product Qualification Certificate |
| windshield |
| Clock screwdriver |
| Handheld portable case |
| Optional accessories | Software CD |
| USB cable |
| Bluetooth adapter+miniature thermal Bluetooth printer |
| AC Adapter |
| Microphone extension cable 5m, 10m, 15m, 20m |
| tripod |
| Piston generator/1-level sound level calibrator/2-level sound level calibrator |