Key Technical Specifications:
Measurement Range: 30–130 dB (selectable bands: 30–80
dB, 60–110 dB, 80–130 dB)
Resolution / Accuracy: 0.1 dB resolution; ± 1.5 dB
accuracy (under reference conditions)
Frequency Bandwidth: 31.5 Hz to 8 kHz
Frequency Weighting: A-weighting and C-weighting
selectable
Response Time: Fast = 125 ms; Slow = 1 s
Microphone: 0.5″ electret condenser microphone
(detachable / remote mic option available)
Alarm / Output: 3.5 mm mono phone-plug output, max
3.4 mA @ 5 V DC; Minimum output voltage 2.5 V DC
Limit Setting Range: User-settable sound level limit
from 30 to 130 dB for high- or low-level alert generation
Display: Multifunction LCD — 4.6″ × 3.125″ (117 mm ×
79 mm)
Power Supply: AC/DC adaptor (100–240 V) for full
functionality (LED alert enabled); or 8 × AA batteries for monitoring (LEDs not
functional on batteries)
Battery Life: Approx. 240 hours continuous (or about
30 days at 8 hours/day) when battery-powered (LED alert disabled in battery
mode)
Operating Conditions: Temperature 0–50 °C (32–122
°F), humidity < 80% RH
Dimensions / Weight: 22 × 18 × 3.2 cm (8.75 × 7.1 ×
1.25 in), ~285 g (0.63 lbs)
Standards / Compliance: Meets IEC 60651-1979 and ANSI
S1.4 1983 Type 2 sound level meter standards — Class/Type 2 SLM accuracy,
compliant for occupational noise regulations (e.g. OSHA)