Guil vim SW-525S 30-130dB Digital Meter Desktop Sound Level Meter with 6 inch LCD Display Meter Decibel Noise Time Temperature Humidity Meter for Classroom, Studio, Factory,Concert Hall

["1. 【Multifunctional Decibel Meter】 The SW-525S desktop decibel meter is a digital sound decibel meter equipped with a 6-inch high-definition LCD screen with adjustable brightness. It integrates a noise meter, thermometer, hygrometer, clock, and time display. The A-weighted sound pressure level meter simulates the frequency characteristics of low-intensity human ear noise, suitable for environmental noise detection.","2. 【High-Precision Measurement】 This sound level meter has a measurement range of 30-130 dB with an accuracy of ±1.5 dB; a frequency range of 35-8.5 kHz; a humidity range of 20%~85%; and a temperature range of -10℃-60℃ (14℉-140℉). Due to different environments, actual measurement values ​​may have a deviation of 0%~15%, which is within the normal range.","3. 【Convenient Charging】 This decibel meter is powered by a built-in 2000mAh lithium battery, providing a battery life of 3-6 days and ultra-long standby time, requiring only one charge per week. The decibel meter is suitable for various environments and can be used to measure noise levels in factories, offices, classrooms, hospitals, concert halls, homes, traffic routes, audio equipment, air conditioners, refrigerators, and other occasions and equipment. It is applicable to noise engineering, noise pollution control, product quality control, health prevention, and treatment.","4. Alarm Switch Setting: A short press of the \"Horn Button\" turns off the alarm; the red light goes out. Pressing the \"Horn Button\" again turns on the alarm; the red light illuminates. In normal measurement mode, a long press of the \"Buzzer Button\" enters the alarm setting. The alarm value can be adjusted using the up and down keys. A short press of the \"Buzzer Button\" saves the alarm value, or a short press of the \"Power Button\" cancels the setting.","5. Note: When turning the device on or off, a short press of the \"Power Button\" may cause the LCD screen to display garbled numbers or numbers without changing, requiring a restart. This device requires an external charger; please use a standard 5V 1A charger. Voltage and current must not exceed 5V 1A, otherwise the circuit board may be damaged. When using the sensor, please check for any obstructions. If the device is powered on but the LCD screen displays nothing, the sensor may be faulty. Please contact us immediately, and we will handle it for you as soon as possible.","6. 【Connect to Computer to Download Data】 The 525B noise meter supports computer applications and can communicate with a computer via USB data cable to download records, perform real-time sampling, print charts and data, etc. The software package is the SW-525B Wall-mounted Noise Meter file. You can log in to the \"Shendawei\" official website, download it, decompress it, open the installation and usage instructions folder, and follow the prompts to install the software."]