This device, please do not in the factory, office, traffic, family, audio system, etc., in a variety of environmental safety, hygiene, industrial, office, and sound quality control designed to meet the measurement requirements of safety. Optical
Standard:
A. Meeting 国際電気 Standard: IEC Pub 651 Type2
B. US National Standards: ANSI S1 4 x Type2
Measuring range: 30 to 130 dBA; 35 to 130 DBC accuracy: +/-1.5 DB
Digit and Resolution: 5bit and 0.1 DB
Reaction rate: 31.5 Hz to 8.5 kHz measuring
Level: 30 to 130, 40 to 90, 50 to 100, 60 to 110, 80 to 130
Frequency Correction features: a and c time weighting: fast/slow
Frequency: 2times/second Overload indication: OVER/UNDER
Microphone: 1/2 inch polarization capacitance microphone
Power: 4 * 1.5 V AA battery or DC V 100mA adapter (battery is not included)
Measurements: 256*70*35 mm
Weight: 228g