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

• 【4 IN 1 MULTIFUNCTIONAL DECIBEL MONITOR】With this classroom noise level monitor, you will get a noise meter, thermometer, hygrometer and digital clock, which provides convenience for your work and life. It adopts air semiconductor sensor to test the decibel, temperature and humidity value, it is more sensitive, accurate and stable, allow you to see the real time decibel level clearly.
• 【11 INCH LARGE LED DISPLAY】This sound and noise meter is designed with 11 inch LED screen, the brightness is adjustable, so that you can effortlessly read it throughout the day. Not only can the screen brightness be adjusted, you can also adjust the speed of detection. Double click M key to adjust the time. A great tool for checking, monitoring or controlling the sound level of any environments.
• 【WIDE APPLICATIONS】This large display decibel meter can be mounted on the wall or placed on the table, it's an ideal noise meter to test the sound level in classroom, studio room, traffic routes, factories, construction site, home, offices, etc. It is powered by 2000mAh battery and comes with a 10ft long USB cable charging, you can put it anywhere you want to place it, charging anywhere, anytime.
• 【EASY TO USE】Not only can the screen brightness be adjusted, you can also adjust the speed of detection. Double click M key to adjust the time. This classroom noise level monitor also supports 2.4G WIFI, and can be connected with your mobile phone connects through wifi and APP. All data and historical data can be viewed from APP via mobile phone, perfect for continuous monitoring.
• 【100% QUALITY ASSURANCE】This db sound meter can be applied to noise engineering, product quality control, health prevention, etc. We are very confident in the quality of this digital decibel meter, and provide 24 months warranty or refund for it. Please feel free to reach us if you have any questions about your purchase. We will solve your problem within 24 hours.

1. [WiFi Function] 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: 1.5S 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