3 In 1 Digital Decibel Sound Meter — Noise, Temperature & Humidity Detector with Auto Calibration

Built-in auto-calibration ensures reliable, accurate readings. The large, easy-to-read display can be dimmed or brightened manually to suit viewing conditions. A multi-color, expressive face indicator visually reflects environmental quality with very realistic icons. Designed for flexible placement — sits on a table or can be hung on the wall.