Features 11in LED Display: Experience a clear and vibrant 11in LED screen that combines a sound level meter, thermometer, hygrometer, and clock for comprehensive environmental monitoring WIFI Connectivity: Easily connect to your smart devices via 2.4G WIFI, allowing seamless data access through the Tuya app for real-time monitoring and control Accurate Semiconductor Sensor: Equipped with a sensitive semiconductor sensor, this device provides precise readings for decibels, temperature, and humidity, ensuring reliable performance Adjustable Brightness Settings: Customize your viewing experience with adjustable brightness levels and three detection speeds (fast, medium, slow) to suit various environments Versatile Applications: Ideal for a wide range of settings including classrooms, studios, factories, and homes, making it a valuable tool for monitoring sound levels and environmental conditions Features: 1、11in LED Screen: This sound level meter has 4 in 1 function and 11in LED display, and is the sound meter, thermometer, hygrometer and clock 4 in 1. And is the great tool for checking, monitoring or controlling and testing any environmental sound level. 2、WIFI and APP Function: This sound meter supports 2.4G WIFI and for Tuya and you can find the data in APP and make the phone connects to the device via wifi and for tuya APP. 3、Semiconductor Sensor: Our LED decibel meter has smart air semiconductor sensor to test decibel temperature and humidity values and very accurate and sensitive. 4、Brightn Adjustment: You can click up icon to enhance the decibel meter brightn, click down icon to reduce the brightn. There are three gears of detection speed, fast, medium speed and slow speed 5、Battery and 10ft Charging Cable: Our LED sound meter is built in 2000mAh lithium battery power, with the 10ft USB charging cable and double click M to adjust the time. 6、Wide Application: This sound level meter is suitable for classrooms, studios, major traffic arteries, factories, construction sites, homes, offices. Specification: Item Type: Sound Level Meter Material: ABS Display Method: LED Screen Atmospheric Prure: 12.5PSI-15.4PSI Sampling Time: 0.3S Detection Temperature Range: -10-+50℃, ±1.0℃ accuracy Storage Temperature: -10 - 60℃ Operating Environment Or Storage Humidity: 10% - 80% Detection Humidity Range: 20% - 85% (Accuracy: 5%) Charge: 1000mA 5VDC Battery: 1 X 18650 2000 MAh (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 Meter Level (Unit DB). Green 1: 55.0 Or L Green 2: 65.0-55.0 Orange 1: 75.0-65.0 Orange 2: 85.0-75.0 Red1: 95.0-85.0 Red 2: 95.0 Or More Level Of Temperature Icons (Unit ℃). Gre Package List 1 x Sound Level Meter 1 x Instruction Manual 1 x USB Cable 1 x Installation Sticker 2 x Screws 2 x Expansion Screws