4 in 1 Decibel Meter, Wall Mounted Sound Level Meter with Digital Clock, Humidity & Temperature, 11 Inch LED Display Classroom Noise Meter for Home, Studio, Factory, Classroom

nction] The device supports 2.4G WIFI, and can be connected with your mobile phone connects through wifi and for tuya APP. All data and historical data can be viewed from APP via mobile phone.
2. [4 in 1 Meter] With this meter, you will get a noise meter, thermometer, hygrometer, and clock, which provides convenience for your work and life. Designed with 11 inch LED screen, the brightness is adjustable.
3. [Easy Charging] This decibel meter has a built in 2000mAh lithium battery power supply, and comes with a 10ft USB charging cable, you can charge easily.

Specification:
Item Type: LED Decibel Meter
Material: ABS
Display Method: LED Screen
Atmospheric Pressure: 12.5PSI to 15.4PSI
Sampling Time: 0.3S
Detection Temperature Range: 14℉ to 122℉
Storage Temperature: 14℉ to 140℉
Working Environment Storage Humidity: 10%-80%
Detection Humidity Range: 20% to 85% (Accuracy: 5%)
Charging: 1000mA 5V DC
Battery: 1 x 18650 2000mAh (Built in)
Unit: dBA
Measuring Range: 30-130 dBA
Accurate: ±1.5dBA
Frequency Range: 50Hz to 8.5kHz
Frequency Weighting: A
Screen Display: 0.1 dBA
Noise Meter Level (Unit: dB):
Green 1: 55.0 or less
Green 2: 65.0 to 55.0
Orange 1: 75.0 to 65.0
Orange 2: 85.0 to 75.0
Red 1: 95.0 to 85.0
Red 2: Above 95.0
Grade of Temperature Smiling Face (Unit: ℉):
Green: 68-86
Orange: Below 68
Red: Above 86

How to Use:
Take out the product, install and use.

Package List:
1 x LED Decibel Meter
2 x User Manual
1 x USB Cable
1 x Installation Sticker
2 x Screw
2 x Anchor