3in1 Digital Decibel Sound Meter — Temperature & Humidity Detector, Wall-Mount/Tabletop, Large Screen, Auto-Calibration, Accurate Measurement

Built-in auto-calibration ensures reliable, accurate measurement of sound, temperature and humidity. The unit features a large, easy-to-read display with manually adjustable brightness. A color-changing emoticon panel uses different colors and facial expressions to intuitively indicate environmental quality, creating a realistic visual cue. Designed for flexible placement — it stands on a table or can be hung on the wall for convenient monitoring.