Digital sound level meter. Two different filter curves A or C and Fast or Slow sound recording. The A-filter corresponds to the human ear’s sensitivity to frequencies and is suitable for environmental sound measurements. The C-filter is linear and is ideal for inspecting machines. Fast sound recording is used when you want to see rapid sound peaks. The Slow mode gives a stable measurement result of sound that varies or pulses. The sound can be measured instantaneously or by giving a mean value over a selected time period, from 10 seconds to 24 hours. Integrated memory for 30 measurements, or the instrument can be connected to a PC to register the measurement values. Registration of max. value. Alarm function indicates via an LED when the sound level is above a set value. The number of measurement values that exceed the alarm value during the measurement period can be shown. Adjustable automatic or manual shut-off. Integrated calibration function 94 dB. Swedish user guide. Battery not included. Conforms to standard IEC 651 Type 2, ANSI 1.4 Type 2.