BTMETER BT-7000A 4-in-1 Decibel Meter 30~130dB, Decibel/Temperature/Humidity Meter with Alarm and USB Cable

[High Accuracy Decibel Meter] This large screen decibel meter Measuring Range: 30~130dBA. Accuracy: ± 1.5 dB. Resolution: 0.1 dB. Sampling Time: 1.0 times/second. The sound level meter is equipped with a large digital LED display.[Real-Time Testing] Supports real-time testing of decibel concentration/temperature/humidity. Three sound sampling rates (fast/medium/slow) meet different sampling requirements. Temperature range: -10.0°C~+50.0°C, Accuracy: +/-1.0°C. Humidity range: 20%~85%, Accuracy: +/- 5%.[Auto Alarm Icons] Time, Decibel, Decibel Bar, Humidity, Smile Temperature and Temperature Face Icons are built into the LED screen. Three colours of smiley face icons temperature indicator and decibel bar indicator highlight the ambient temperature and decibel respectively in real time.[Wall Mount Digital Decibel Meter] Unlike portable sound level meters, this wall mount sound level meter can be mounted on a wall or table and comes with a 1000mAH battery that can be plugged in for long term decibel monitoring. In addition, it is perfect for testing noise levels in classrooms, studios, driveways, factories, construction sites, homes, offices and more.[Packing List] Decibel Meter*1, Instruction Manual*1, Positioning Sticker*1, USB Cable*1, Screw*2, Rubber Plug*2 We try our best to produce the best products. If you feel 100% unsatisfied, please feel free to contact us, we will try our best to solve any problem. DECIBEL INDICATOR: <55dB green bar55~65dB double green bar65~75dB triple green bar75~85dB four green bars85~95dB Four green bars and one blue bar> 95dB Four green bars, one blue bar and one red bar PRODUCT SPECIFICATIONS: Display Method LED Screen Atmospheric Pressure 12.5 PSI-15.4PSI Sampling Time 1.5 Seconds Temperature Range -10℃-50℃ Storage Temperature -10℃-60℃ Relative Humidity 20%-85% Humidity Range 20%-85% Charging 1000 mAh 5V Battery 2000 mAh Lithium lon Product Weight 554g Product Size 271*181*41.9mm Concentration Unit Decibel dBA Measuring Range 30-130dBA Accuracy ±1.5 Frequency Range 50Hz-8.5kHz Frequency Weighting A Resolution 0.1dBA