Part of the Laser range of Workshop tools. The Laser Tools Sound Level Meter has a range 30-130db (over & under range display). Dynamic range 50db. Frequency range 31.5hz-8khz (accuracy plus or minus 1.4db). It also has a digital readout, fast & slow response plus data hold. Conforms IEC61672-1 Class 2.
Includes: 9V battery