Feature: 1. Designed according to international standards: IEC 651 Type 2 and ANSI S1.4 Type 2. 2. , compact, and portable design. 3. Accuracy up to ±1.5dB. 4. Maximum value hold function to capture and retain the highest reading. 5. Large LCD screen with clear digit display. 6. Auto power-off feature for energy saving. Automatic backlight display. 7. Portable, easy-to-use instrument ideal for sound level monitoring in factories, traffic environments, homes, and o systems. 8. Includes a protective sponge windscreen. 9. Features automatic power-off and auto backlight for enhanced usability and efficiency. 10. Combines precision and convenience for reliable sound measurement applications. Specification: Digital Sound Level Meter Decibel Logger 30-130dB Features: - Complies with IEC 651 Type 2 and ANSI S1.4 Type 2 standards - Compact and portable design - Accuracy: ±1.5dB - Max hold function for peak reading retention - Large 4-digit LCD display with 0.1dB resolution - Built-in protective sponge ball - Auto power-off and automatic backlight - Suitable for sound level monitoring in industrial, residential, transportation, and o environments Specifications: - Measuring range: 30-130dB(A) - Accuracy: ±1.5dB - Frequency range: 31.5Hz to 8.5kHz - Frequency weighting: A-weighted - Digital display: 4-digit LCD - Resolution: 0.1dB - Sampling rate: 2 times per second - Microphone: 1/2 inch electret condenser microphone - Max hold: Yes - Power supply: 9V battery (battery not included) - Battery life: Approximately 30 hours (with alkaline battery) - Operating conditions: 0°C to 40°C, 10% to 80% RH - Storage conditions: -10°C to 60°C, 10% to 70% RH - Product weight: 105g - Package weight: 130g - Product dimensions: 14.2 x 5.3 x 3.5cm - Package dimensions: 15.2 x 6.0 x 4.2cm Package List: 1 x Sound Level Meter 1 x Sponge Ball 1 x User Manual