Description:The sound level meter is versatile device for measuring sound strength in an acoustic environment-loud or soft; high pitched, low-pitched, intermittent or continuous. This meter can be used in measuring noise of various occasion such as factory, office, home, traffic route, acoustics, air-conditioner, refrigerator, etc. You can test surround sound system to see exactly how much sound each to see if any adjustments need to be done.Features:Super large 9.6" LCD digital display with backlight that makes reading more clear and visually in dark areas.Alarm function. When the measuring value is over the alarm value, the meter will make a sound beeping and lock the data with blinking for 2 minutes.Data storage. The instrument will automatically store the data every 2 seconds, and the stored value is the largest noise value in 2s, which can last for one year.Connecting computer with USB cable, you can down-load records, collect samples and print chart and date,etc.Wall hanging type. With the hanging hole, it can installed on the wall to or free stand on the table.Application: families, factories, offices, hotels, hospitals, laboratory, theaters and audio systems, etc.Specification:ModelSW-525BAccuracy±1.5dBMeasurement Range30~130dBFrequency Response Range31.5Hz~8.5KHzFrequency WeightingAResponseFastResolution0.1dB(<100dB), 1dB(>100dB)Alarm Reminder(sound+display)YesAlarm OutputYesStorage Function2secs/time, can be stored for a yearCommunicationconnecting PC via USB cableWorking Temperature/Humidity0-40℃, 10%~80%Storage Temperature/Humidity-10-60℃, 10%~70%CharacteristicsMaterialPlastic, MetalColorBlackPowerDC 5V 1A micro USBProduct Size(appr.)228x125.5x32mm / 9.0x4.9x1.3inchPackage Weight(appr.)612gAccessoriesUSB Cable, User Manual, CDPackage Included:1 x Sound Level Meter1 x USB Cable1 x User Manual1 x Warranty CardWarning:1. Do not use meter in high temperature and high humidity environment.2. Do not use meter near corrosive material.3. Do not use meter in the conditions that should be splashed by water.4. Do not use meter in heavy dust environment.5. Do not use meter in an environment with chemical gas..