Meco Sndway Sw-525a Digital Sound Level Meter Noise Decibel Meter 30~130db Large Screen Display Wall Hanging Type

Features: Measurement range: 30~130dBdB Accuracy: +1.5 dB (reference sound pressure level, 94dB @ 1kHz) Dimensions: 210 x 130 x 30MM Frequency response: 31.5Hz ~ 8.5kHz frequency weighting: A Response time: Fast Alarm switch indicator/Condenser microphone sensor. Microphone: 1/2 inch condenser microphone Digital Display: 3pcs 3-inch digital tube display three Power supply: DC 5v 1A micro USB working environment: 0-40 degrees (32 degrees Fahrenheit to 104 degrees Fahrenheit) 10 - 80%RH Storage of Temp. and humidity: -10~60C 10~70%RH Note: This product has no switch function. When you connect USB cable, it will start. When you take out the cable, it will power off. Thanks Package Included: 1 x SW-525A sound level meter 1 x DC 5v 1A micro USB cable Detail Pictures: