This sound level meter boasts several features and specifications designed to provide accurate measurements and convenient use. Here's a breakdown of its key attributes: Item Type: Sound level meter Material: ABS, LED Color: Black Measuring Range: 30dB-130dB Accuracy: 1.5dB (based on standard sound source, 94dB at 1KHz) Frequency Response: 31.5Hz-8.5KHz Frequency Weight: A weight Response Time: Fast, 0.5 seconds Sensor Type: 6mm condenser microphone sensor Digital Display: 3 digits Resolution: 0.1dB (100dB) Alarm Prompt Mode: Sound and display Alarm Output: 12V high level Refresh Speed: 2 times per second Power Mode: DC5V 1A Micro USB interface Operating Temperature and Humidity: 0-40C; maximum relative humidity 80%, indoor altitude