Features:
It can convert ambient sound into electrical , process data and displays results on LCD.The product is compact and light weight, convenient to carry.White backlight, LCD digital display, easy to read.Equipped with sponge ball to filter-out unwanted .Great tool for monitoring noise levels in hotels, conference halls, home theater, hospitals, and any other noise sensitive environments.

Specifications:
Color: White
Measuring Range: 30 ~ 130dB
Accuracy: ±1.5dB
Resolution: 0.1dB
Frequency Range: 31.5HZ ~ 8KHZ
Frequency Weighting: A
Sampling Frequency: 2 times/sec
Digital Display: 4 digits
Microphone: 1/2" Condenser microphone
Operating Temperature: 0~40°C (32 ~ 104 °F)
Operating Humidity: 10 ~ 80%RH
Storage Temperature: -10~60°C (14 ~ 140 °F)
Storage Humidity: 10-70%RH
Power Supply: 3 x 1.5V AAA Battery (included)
Size: Approx. 14.2 x 5 x 2.5cm / 5.59 x 1.97 x 0.98inch
Weight: Approx. 148g

Package Included:
1 x Sound Level Meter
3 x 1.5V AAA Battery
1 x Manual