Decibel Meter with Large LED — Wall-Mount Sound Level, Temperature & Humidity Monitor for Classroom

Bright, adjustable LED display shows live readings for sound level, temperature and humidity with selectable brightness for easy viewing. The unit features an automatic, color-coded noise alarm that changes according to measured decibels: green for less than 60dB, yellow for 60 to 75dB, orange for 75 to 85dB, and red for 85dB or more. Capable of precise sound monitoring from 30 to 130 decibels, this multifunction meter also provides humidity, temperature, and accuracy readings. Powered by a 2000mAh Li battery, it includes a 9.8in (300cm) long USB cable for charging so you won’t worry about cable length. Designed for versatile placement, the device can be hung on a wall or set on a desk and is suitable for monitoring noise on traffic routes, construction sites, homes, offices, and classrooms. Precision Measurement.