ANENG Digital Noise Meter 35db-135db Decibel Meter LCD Display Sound Level Meter High-precision Sound Decibel Monitor Professional Noise Tester Household Noise Measuring Instrument with Condenser Microphone Features: - Compact & Ultra-lightweight: Humanity Design, mini size and light weight for easy carrying. - High-precision Sensor: High sensitivity & high precision & high response speed. - VA Color Screen: The high-definition LCD display with backlight enables you to read values clearly even in the dark environment. - Wide Frequency Range: 31.5Hz~8KHz. - Fast/slow Time Weighting: 125ms(fast) / 1m(slow). - °C/°F Switchable: Temperature measurement units can be selected at will. - Low Battery Prompt: Capable of reminding you to change batteries in time in case turning off when using due to lack of electricity. - Automatic Shutdown: No operation within 15 minutes, energy saving. - Diversified Functions: Sound level measurement, environment temperature measurement, maximum & minimum measurement, data retention, over-range indication. - Wide Application: Applied in environmental measurements, law enforcement requirements, design measurements, sound level analysis of machines and engines. Specifications: Brand: ANENG Model: GN101 Material: ABS Color: Black&Green Power Supply: 3 * 1.5V AAA Batteries (NOT included) Measuring Range: 35dB~135dB Resolution: 0.1dB Accuracy: ±2.0dB Dynamic Range: 50dB Frequency Response Range: 31.5Hz~8KHz Frequency Weighting: Weighted network Temperature Measuring Range: -20°C~70°C / -4°F~158°F  Resolution: 0.1°C / 0.1°F Accuracy: ±1.5°C / 2.7°F Operating Temperature: -20～60℃ (-4°F～140°F), 10%～90%RH Storage Temperature: -20～60℃ (-4°F～140°F), 10%～75%RH Item Size: Approx. 163.6*56*29.7mm / 6.44*2.2*1.17in Item Weight: Approx. 73g / 2.57oz Package Size: Approx. 27*10*4.5cm / 10.63*3.94*1.77in Package Weight: Approx. 145g / 5.11oz Note: Please read the Users Manual before use. Packing List: 1 * Digital Sound Level Meter 1 * Users Manual(English)