Sound level Range:30 to 130dB (Low=30-100dB ,High=60-130dB) Auto Ranging Measures Temperature and Humidity to make an 3 in 1 Environment Meter Temperature range: :-10~50oC (14 to 122oF) - (±1oC / ±1oF Accuracy) / Humidity range: 20%~90%RH (±5% Accuracy) Max Hold Function, Time & Date Display, White Backlight and Tripod Mount USB Port as alternative source of power / Celsius & Fahrenheit Switchable Readings / Case & Batteries included /, Manufacturer: Max Measure