2X Decibel Meter — SPL & dB Sound Level Reader with Temperature and Humidity | Classroom Noise Monitor

Compact, wall-mountable sound level meter that also displays ambient humidity and temperature, ideal for classrooms, home theaters, workshops and continuous monitoring. The unit features automatic alarm icons that change color based on the measured noise level: Green for less than 60dB; Yellow for 60~75dB; Orange for 75~85dB; Red for more than 85dB.\n\nIncludes three adjustable response speeds to suit your measurement needs: 1. Fast 2. Medium 3. Slow. In addition to sound readings, the device provides temperature and humidity measurements for a fuller environmental picture.\n\nPerformance specifications: Decibel level measuring range: 30~130dB with an accuracy of ±1.5dB. Frequency response range: 50Hz ~8.5KHz. Temperature range: 14~140°F. Humidity range: 20~85%.\n\nEasy viewing and flexible installation: the meter has an extra-large, high-definition backlit LCD for clear readings day or night. Designed for permanent placement, it mounts on the wall and includes a 10ft power cord, but it also sits flat for tabletop use.\n\nDurable, portable design: runs unplugged for hours on its built-in 2000MaH battery and can be used as a classroom noise meter, an SPL meter near your TV for a home theater, or in a garage workshop for sound monitoring.