Feature: 1. [4 in 1 Meter] This large screen meter measures noise levels, temperature, humidity and displays time, offering comprehensive indoor monitoring. 2. [Condenser Microphone Sensor] Equipped with ultra thin metal vibrating thin film, this decibel meter provides practical output and instantaneous response, ensures accurate readings. 3. [USB Data Storage] You can connect this sound level meter to a computer via USB cable to instantly read and export data to an Excel spreadsheet, and easily analyze data. 4. [Quick Response Time] With a quick response speed, this noise detector offers high measurement accuracy, reaching up to ±1.5dB. 5. [Alarm Prompt] The device features a visual indicator and a beeping alarm to signal excessive noise levels, ensuring prompt awareness and response to potentially harmful noise levels. Specification: Item Type: Sound Level Meter Material: ABS Battery Type: Lithium battery (included) Battery Capacity: 4000mAh Storage Function: 2 seconds/record, can store for one year Communication with Computer: USB connection Alarm Prompt (Sound + Display): Yes Alarm Clock Function: Yes Time Display: 24 hour format Temperature Display: 2 digits Humidity Display: 2 digits Power Supply: DC5V 1A Type C USB interface Measurement Range: 30~130 decibels Accuracy: ±1.5dB (based on standard sound level, 94dB at 1KHz) Frequency Response: 31.5Hz~8.5 KHz Frequency Weighting: A weighting Response Time: Fast Microphone: 6mm condenser microphone Digital Display: 3 digits Resolution: 0.1dB (100dB) Operating Temperature: 0~40℃, 10%~80% RH Operating Humidity: -10~60℃, 10%~70% RH Low Battery Warning: Below 3.6V±0.1. Package List: 1 x Sound Level Meter 1 x Data Cable 1 x User Manual