Need to keep the noise down in a classroom, library, hospital waiting room, or office? This digital decibel meter is a polite, automatic way to do it. It monitors sound levels from 35dB to 135dB with good accuracy (±2.0dB) and displays the reading on a large LCD screen with a backlight. The coolest feature is the alarm: you can set a custom noise level threshold. If the room gets too loud, it will actually speak out \Quiet Please!\ as a reminder (or you can choose a siren sound). It also has a traffic light system (green/yellow/red lights) that changes based on the noise level. You can mount it on a wall or just set it on a table—it runs on either 6 AA batteries (included) or an AC adapter (not included). It's perfect for places where you need a constant, visual and audible reminder to keep volume at a respectful level without anyone having to play the \shushing\ police. Easy to set up and use!
