Electric sound level meter class I (A+C) with included micro-SD 8Gb.

Precise weighing A (human ear) and C (machine noise).

KHz: 0.03 0.06 0.12 0.25 0.5 1 2 4 8

db± 2 1.5 1.5 1.4 1.4 1.1 1.6 1.6 2.1

A-weighing (environmental sound level)

Weighing C (machine noise control)

Flow rates db: 30:80-50:100-80:130

Resolution: 0.1 db

Hertz: 31.5-16,000

RS232/USB output

6 x 1.5V AA included.