Decibel Meter Sound Level Reader 30-130dB(A), Hand-held Sound Noise Meter with Backlight Alarm, Digital Noise Meter Decibel Monitoring Tester Calibrated Audio Noise Volume Measuring Instrument

Yes arrived in good shape and easy to work it.

Wonder how loud the report of your gun is? This was really informative and easy to use. Easy to read and see the display.

This works well and is easy to use, it has limited features but for the money it does what it is supposed to I think-- the problem is this needs to be calibrated and those calibration units are expensive. It would have been nice if this were calibrated at the factory and thus it accuracy could be counted on out of the box.

I bought this to help my kid control their volume. I tested their volume and then matched it to let them hear how it sounded. Also measured volume in the next room to help them understand how they were impacting family members especially if they were trying to sleep. Auto off is great because the kids use it themselves now and it saves battery. Also easy to use. And not to big for smaller hands.

I have sensible ears and measuring sound of various applications like my motorcycle pipes, horns, firearms and other stuff helps me make adjustments and gives me a warning to use more ear protection. Inexpensive and very useful.

First, there is a battery compartment. Remove the orange casing. Put your fingernail in one of the corners and peel it off. When you have the totally black meter out of the orange case, the battery compartment is on the back. Every meter must be calibrated. The instructions on how to calibrate this meter aren't written for a first-time user. And they instruct you to use a tool and equipment that are not included with this meter. The tool you need is a small screwdriver, like the kind you use for a watch or glasses. The equipment you need is called a “94 dB@1KHz standard sound source” in the instructions. What’s that? An acoustic calibrator. Do a search for acoustic calibrators and they’re all more than 5x the cost of this meter. Once you can get it calibrated, the meter is easy to use. My opinion is if you want a sound meter to conduct a study, collect data, or to use as evidence (like in a complaint about a noisy neighbor), you would be better served to get a higher quality meter. This is a simple, low cost sound meter that can offer general comparisons of sound levels. There are decibel meter apps, but none is considered particularly accurate because they’re all limited by variances among different phones. This meter is a step above those apps.

Very accurate and dependable

it registers decibel levels when there is no sound, so I don't think its very accurate. Also it's frenetic. you turn it own and the decibels go up and down without any rhyme or reason. The instructions leave something to be desired. Calibration method. Carefully plug the microphone head in 1/2 inch hole of standard source (94dB@1KHZ) .. no idea what microphone head they are referring to and the 1/2" hole... so yeah going to send this back.