• 5-in-1 Decibel Meter - 30-130dB Range Wall Mount Sound Level Meter, 11" Large LED Display Noise, Temperature & Humidity, Time Measurement Meter for Home, Classroom, Wall Hanging Sound Decibel Meter KWD 20.500
• 5-in-1 Decibel Meter Wall Hanging Sound Level Meter 30-130dB Range 11 Inch Large LED Display Noise & Time & Temperature & Humidity Meter Wide Applications for Home, Studio, Factory, Classroom KWD 19