Wall-mounted digital noise meter sound level meter
Part No.: SW-525B
Frequency Range: 31.5-8.5KHz
Frequency Weighting: A
Microphone: 6mm capacitance microphone
Digital logging personal noise dose meter acoustic level meter
Part No：SL-1256DOS
DOSE is a parameter used to quantify noise exposure measured in a period, during turns of % noise exposure relative to 90dBA for 8 hours