This AirKnight decibel reader support you to monitor noise levels in your home or workplace. ? HUGE SCREEN: The AirKnight Monitoring AT5000 digital dB meter features an extra-large high-definition, backlit LCD screen for easy reading at any time of day. Unlike traditional handheld sound meters, our premium, wall-mountable digital sound level meter is ideal for continuous sound monitoring. ? LONG-LASTING AND MULTI-PURPOSE: Containing a durable 2000mAh Lithium battery, the AirKnight classroom noise meter adapts to various spaces, whether wall-mounted with its 10ft power cord, placed on tables with its flat base, or used wirelessly. Ideal for monitoring sound levels in classrooms, it also doubles as a home theater SPL meter. ? KEEP IT QUIET!!!: The AirKnight digital sound level meter is exactly what you need! With precise measurements, youll finally have the proof to ask your kids, colleagues, and negibors to turn down the volume. ? ADDED BONUS: Along with top-notch decibel measurement, weve added humidity and temperature readings for added convenience. We've got the best decibel meter which offers 3 ADJUSTABLE SPEED SETTINGS (1. Faster 2. Medium 3. Slower) to make readings easy and tailored to your needs. ? DON'T WORRY, YOU'RE COVERED: AirKnight, proudly American-owned, goes the extra mile to ensure each portable decibel meter meets high-quality standards through extensive testing. If you're not fully satisfied, our dedicated US-based team is ready to help youhassle-free!