[Sensitive Sensor] 0.5s response time, non-contact measurement. Measures sound levels accurately and quickly under various conditions. [LCD Display] Large backlit LCD screen for clear visibility, even in low light. Designed with low radiation to help reduce eye strain. [Precise Measurement] Measures sound levels from 30 to 130 dBA with an accuracy of ±1.5 dB and 0.1 dB resolution. [Multifunctional Features] Includes data hold function, max/min sound level tracking, and 15-minute automatic power-off. Built-in alarm alerts when sound reaches 130 dB. [Power Supply] Operates on one 9V battery (included). Product Description Main Parameters Frequency Weighting: A Measurement Range: 30–130 dB Accuracy: ±1.5 dB Resolution: 0.1 dBA Response Time: 0.5 seconds Operating Temperature: 0–40°C (32–104°F) Operating Humidity: 10–90% RH Storage Temperature: -10–60°C (14–140°F) Storage Humidity: 10–70% RH Dimensions: Approx. 170 (L) x 58 (W) x 35 (H) mm (6.7 x 2.3 x 1.4 inches) Weight: Approx. 107 g Power Supply: One 9V battery Main Functions Data Hold Max/Min Display 15-Minute Auto Power-Off Large LCD Display Package Contents 1 x Digital Sound Level Meter 1 x 9V Battery Sound Level Guidance Prolonged exposure to noise levels above 85 decibels may lead to hearing damage. Use this device to monitor environmental noise and protect your hearing. 20dB: Very quiet 40dB: Quiet 60dB: Moderate 85dB: Threshold for potential hearing risk with extended exposure 90dB: Loud 100dB: Very loud 110dB: Extremely loud 120dB: Risk of immediate hearing damage Wide Application Ideal for measuring noise from household appliances, pet sounds, construction sites, industrial environments, offices, traffic, and musical instruments. Suitable for both home and professional use. Measurement Tips 1) When measuring outdoors, ensure the device is protected from wind interference. 2) Minimize background noise for more accurate readings. 3) Take multiple measurements to ensure consistent results. Important Notes 1) Remove the 9V battery if the device is not used for an extended period. 2) Avoid using the device in environments with extreme temperature or humidity.