Purchase instructions:
1.The product is powered by 12V DC,Product has no battery, it uses AC power supply.
2.Usually in a very quiet room, the value will not be lower than 40dB, which is normal.
Description:
Large digital LED display Measurement range is 30 ~ 130dB The meter can be hangged on the wall.
Specifications:
Measurement range : 30 ~ 130dB (dB).
Accuracy: +1.5 dB (reference sound pressure level, 94dB @ 1kHz).
Frequency response: 31.5Hz ~ 8.5kHz frequency weighting: A and C.
Response time: Slow or Fast.
Power supply: DC 12V 1A DC5521.
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.
Package Included:
1 x Sound level meter
1 x Power supply
1 x Manual