Accurately measure and monitor sound levels with this professional-grade Audio DB Meter, designed to meet IEC651 Type 2 and ANSI S1.4 Type 2 standards. Featuring a wide measuring range from 30 to 130 dB, this digital sound level meter offers precise and reliable readings for a variety of environments including industrial sites, offices, homes, schools, and construction areas. Its compact and lightweight design ensures portability and ease of use, making it an essential tool for sound quality control and noise assessment. Key Features: · Compliance with IEC651 Type 2 & ANSI S1.4 Type 2: Guarantees high accuracy and reliability with ±1.5 dB precision, suitable for professional and personal sound level monitoring. · Wide Measurement Range: Measures sound levels from 30 to 130 dB with automatic shifting function and selectable frequency weighting modes (A and C) for versatile sound analysis. · Fast and Slow Response Modes: Choose between high speed (FAST, 125ms) and low speed (SLOW, 1 second) response rates to capture transient or steady noise levels effectively. · Dual AC/DC Analog Signal Output: Enables connection to frequency analyzers or X-Y axis recorders for detailed statistical sound data analysis. · Backlit Digital Display: Equipped with a clear 4-digit LCD and backlight function for easy reading in low-light or nighttime conditions. · Durable and Lightweight Construction: Made from sturdy ABS plastic, this handheld meter is wear-resistant and ergonomically designed for comfortable, long-term use. · Auto Power Off Function: Enhances battery life with a high-efficiency power supply circuit, ensuring long-lasting performance (requires 3 AAA batteries, not included). · Versatile Applications: Ideal for personal, family, business, educational, and industrial noise level monitoring, helping maintain safe and compliant sound environments. Specifications: · Material: ABS Plastic · Accuracy: ±1.5 dB (94dB @ 1KHz standard sound source) · Frequency Response Range: 31.5Hz to 8KHz · Dynamic State Range: 50dB · Measurement Range: 30~130 dBA, 35~130 dBC · Frequency Weighting: A Weight and C Weight · Dynamic Characteristics: FAST (125ms), SLOW (1 sec) · Microphone: 6mm Capacitor Microphone · Display: 4-digit LCD, resolution 0.1 dB, sampling rate 2 times/sec · Dynamic Scale Display: 1 scale equals 1 or 2 dB, sampling frequency 2 times/sec · Dynamic Scale Shift Options: 30~130 dB, 30~80 dB, 50~100 dB, 80~130 dB · Overload Display: Shows "UNDER" or "OVER" on screen · AC Signal Output: 0.65Vrms per shift and full scale, impedance approx. 600Ω · DC Signal Output: 10mV/dB, impedance approx. 100Ω · Power Supply: 3 x 1.5V AAA batteries (not included) · Operating Temperature & Humidity: 0～40℃ / 32～104℉ (10%～80% RH) · Storage Temperature & Humidity: -10～60℃ / 14～140℉ (10%～70% RH) · Dimensions: 215 x 64 x 27 mm (8.46 x 2.52 x 1.07 in) · Weight: Approx. 178g (6.29 oz) Package Includes: · 1 x Sound Level Meter · 1 x User Manual (English) This handheld digital sound level meter combines precision, durability, and user-friendly features to provide an efficient solution for sound measurement and noise control in diverse settings. Its advanced functions and robust design make it a valuable tool for professionals and individuals seeking accurate sound level data.