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 MeterMaterial: ABSBattery Type: Lithium battery (included)Battery Capacity: 4000mAhStorage Function: 2 seconds/record, can store for one yearCommunication with Computer: USB connectionAlarm Prompt (Sound + Display): YesAlarm Clock Function: YesTime Display: 24 hour formatTemperature Display: 2 digitsHumidity Display: 2 digitsPower Supply: DC5V 1A Type C USB interfaceMeasurement Range: 30~130 decibelsAccuracy: 1.5dB (based on standard sound level, 94dB at 1KHz)Frequency Response: 31.5Hz~8.5 KHzFrequency Weighting: A weightingResponse Time: FastMicrophone: 6mm condenser microphoneDigital Display: 3 digitsResolution: 0.1dB (<100dB), 1dB (>100dB)Operating Temperature: 0~40, 10%~80% RHOperating Humidity: -10~60, 10%~70% RHLow Battery Warning: Below 3.6V0.1.Package List:1 x Sound Level Meter 1 x Data Cable1 x User Manual