Features Multifunctional Accuracy Instrument: This advanced decibel meter not only precisely measures sound levels but also doubles as a thermometer, hygrometer, and clock, providing a comprehensive environmental monitoring solution. Expansive 11-inch LED Display: Featuring a large 11-inch LED screen, this device presents its readings with adjustable brightness settings, ensuring clarity and ease of use in various lighting conditions. Elevated Sensitivity and Accuracy: Equipped with an intelligent semiconductor sensor, the decibel meter delivers highly sensitive and accurate assessments of sound, temperature, and humidity levels for reliable and stable data. Versatile Usage: Ideal for a broad range of applications, this sound levels meter is perfect for acoustic studies, product quality assessments, occupational health and safety compliance, and environmental noise monitoring. Convenient USB Rechargeability: With an integrated 2000mAh lithium battery and an included 10-foot USB charging cable, this portable decibel meter offers the ease of recharging on the go, ensuring continuous operation without the need for constant battery replacements. Description: This advanced device is a multifunctional accuracy instrument that serves as a decibel meter, thermometer, hygrometer, and clock, featuring a large 11-inch LED display. It has a highly sensitive and accurate semiconductor sensor making it suitable for various applications like acoustic studies and noise monitoring. Additionally, it boasts a convenient USB rechargeable battery, enhancing its portability for continuous use. Specification:Item Type: Wall Mounted Sound LevelMeter Material: ABS Display Method: LED Screen Atmospheric Pressure: 12.5 PSI- 15.4 PSI Sampling Time: 1.5 S Detection Temperature Range: -10℃-50℃ Storage Temperature: -10℃-60℃ Operating Environment, Storage Humidity: 20%-85% Detection Humidity Range: 20%-85% (Accuracy: 5%) Charging: 1000 mA 5V DC Battery : 1 x 18650 2000mAh (shipped with built in battery) Unit: dBA Measurement Range: 30-130dBA Accuracy: ±1.5dBA Frequency Range: 50Hz-8.5kHz Frequency Weighting: A Screen Display: 0.1 dBA Sound MeterLevel (Unit dB): Green 1: 55.0 or less Green 2: 65.0-55.0 Orange1: 75.0-65.0 Orange2: 85.0-75.0 Red1: 95.0-85.0 Red 2: 95.0 or more Temperature Rating (unit ℃): Green: 20-30 Orange: Below 20 Red: Above 30 Package List:1 x Wall Mounted Sound LevelMeter 1 x Instruction1 x USB Cable1 x Installation Sticker2 x Screw2 x Expansion Tube Package List 1 x Wall Mounted Sound Level Meter 1 x Instruction 1 x USB Cable 1 x Installation Sticker 2 x Screw 2 x Expansion Tube