Check the listing for details. Decibel Meter 4in1 Humidity Decibel Test F9D3. Condition: New. Listed at 66.16 USD. 4in1 decibel meter design, it is designed to combine a sound meter, , humidity meter and in . It is a useful tool for testing, or controlling and testing the ambient environment and sound level. Adopts semiconductor , it tests , humidity, and decibel values with high accuracy and sensitivity. 11-inch large display with , , humidity, and decibels display function. gears of decibel level indicator design with three different colors of green, yellow and red to indicate different decibel levels, also with three indicator symbols.​ Support and APP function. Features: 4in1 Design: The 4-in-1 function is designed to combine a sound meter, , humidity meter and in . It is a useful tool for testing, or controlling and testing the ambient environment and sound level. Semiconductor : Adopts semiconductor , it tests , humidity, and decibel values with high accuracy and sensitivity. Digital Color Display: 11inch large display with , , humidity, and decibels display function, all the data can be seen at a glance. And the brightness is adjustable. ​6 Gears of Decibels Design: 6 gears of decibel level indicator design with three different colors of green, yellow and red to indicate different decibel levels, also with three indicator symbols.​ and APP Function: Support 2.4G, make your cellphone connect to the device via and the app, and you can find data in the app. USB Design: Built-in 2000 mAh , USB cable , with long endurance. Wide Applications: Simplicity and elegance dewign, can perfectly fit in any modern designed home or office furniture, widely used in homes, schools, offices, hotels, etc. Specifications: Name: Decibel Meter Material: ABS : 1 * built-in 2000mAh (included) Item size: 270 * 89 * 36mm / 10.63 * 3.50 * 1.42in Item weight: 320g / 11.3ounce Package size: 330 * 100 * 45mm / 12.99 * 3.94 * 1.77in Package weight: 560g / 1.23lb Packing List: 1 * Decibel Meter