Feature:1. This Audio DB Meter complies with IEC651 Type 2 and ANSI S1.4 Type 2, with the measuring scope from 30 to 130 dB and automatic shifting function, A and C Frequency Weighting mode selection and High speed(FAST)/Low speed(SLOW) response rate selection.2. The mini handheld digital sound level reader is compact, lightweight, and easy to use, it is not only extremely wear-resisting, but also elegant.3. The output of AC and DC analog signal can be connected to frequency analyzer or X-Y axles recorder for statistic analysis of data.4. Features with backlight feature, it is appropriate for gathering the sound data at night. And auto power off function is provided, high-reliability and well-designed high-efficiency power supply circuit make the battery more High quality.5. Portable and easy to use, suitable for checking, monitoring or controlling the sound level for personal, families, business, studies, industrial, etc.6. This Audio DB Meter complies with IEC651 Type 2 and ANSI S1.4 Type 2, with the measuring scope from 30 to 130 dB and automatic shifting function, A and C Frequency Weighting mode selection and High speed(FAST)/Low speed(SLOW) response rate selection.7. The mini handheld digital sound level reader is compact, lightweight, and easy to use, it is not only extremely wear-resisting, but also elegant.8. The output of AC and DC analog signal can be connected to frequency analyzer or X-Y axles recorder for statistic analysis of data.9. Features with backlight feature, it is appropriate for gathering the sound data at night. And auto power off function is provided, high-reliability and well-designed high-efficiency power supply circuit make the battery more High quality.10. Portable and easy to use, suitable for checking, monitoring or controlling the sound level for personal, families, business, studies, industrial, etc.Specification:Want to test the sound level? Need to know the noise level? Try our digital sound level meter. It's featured with wide measuring range (30-130dB). It's portable and easy to use as a handy instrument for sound quality control in factory, office, home, school and construction site.Features:This Audio DB Meter complies with IEC651 Type 2 and ANSI S1.4 Type 2, with the measuring scope from 30 to 130 dB and automatic shifting function, A and C Frequency Weighting mode selection and High speed(FAST)/Low speed(SLOW) response rate selection.The mini handheld digital sound level reader is compact, lightweight, and easy to use, it is not only extremely wear-resisting, but also elegant.The output of AC and DC analog signal can be connected to frequency analyzer or X-Y axles recorder for statistic analysis of data.Features with backlight feature, it is appropriate for gathering the sound data at night. And auto power off function is provided, high-reliability and well-designed high-efficiency power supply circuit make the battery more High quality.Portable and easy to use, suitable for checking, monitoring or controlling the sound level for personal, families, business, studies, industrial, etc.Specifications:Material: ABS plasticAccuracy: 1.5 dB (based on the standard sound source, 94dB @ 1KHz)Frequency Response Range: 31.5Hz~8KHzDynamic State Range: 50dBMeasurement Range: 30~130dBA, 35~130dBCFrequency Weighting Character: A weight and C weightDynamic Characteristic of Sound Pressure: FAST 125ms, SLOW 1secMicrophone: 6mm capacitor microphoneDigital Display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/secDynamic Scale Display: 1 scale equals 2dB or 1dB, sampling frequency 2 times/secDynamic Scale Shift: 30~130dB, 30~80dB, 50~100dB, 80~130dBOverload Display: "UNDER" or "OVER" in display screenAC Signal Output: 0.65Vrms for each shift and full scale, the output of impedance around 600ohmDC Signal Output: 10mV/dB, the output of impedance around 100ohmPower Supply: 3 * 1.5V AAA battery (NOT included)Operating Temperature & Humidity: 040 / 32104 (10%80%RH)Storage Temperature & Humidity: -1060 / 14140 (10%70%RH)Item Size: Approx. 215 * 64 * 27mm / 8.46 * 2.52 * 1.07inItem Weight: Approx. 178g / 6.29ozPackage Weight: Approx. 336g / 11.87ozPackage Size: Approx. 23.3 * 18 * 5.5cm / 9.18 * 7.09 * 2.17inPackage List:1 * Sound Level Meter1 * User Manual (English)Package List:1 * Sound Level Meter1 * User Manual (English)