Types 2270 are innovative, Sound Level Meter from Brüel & Kjær. The Sound Level Meter easy, safe and clever design philosophy is based on extensive research. This Sound Level Meter can host a number of applications includingfrequency analysis, logging, FFT, building acoustics and signal recording. Additionally, this Sound Level Meter can simultaneously measure with two microphones. All application modules can be ordered as part of a fully preconfigured instrument or separately at any time, as the need arises.