Castle Sonus GA116E Environmental Sound Level Meter ( Class 1, 60 -130 dB )

Standard: IEC 61672 -1 : 2002 Class 1 Group X
Level range: 60 -130 dB
Display Range: 59-133 dB
Peak Range: 70-133 dB
Measurement Channels: Two
Parameters: Lp, Leq, Lmax, Apeak, Cpeak, Zpeak, LE, L10, L90, Ln (user selectable), Measurement Run Time, Overload, Interval Duration
Linear Operating range: 70 dB
Frequency Weighting:‘A’, ‘C’ and ‘Z’
Time Weighting: ‘Slow’, ’Fast’ and ‘Impulse’
Percentiles: L10, L90 and either L1 , L5 , L50 , L95 , L99
Memory: 2100 Data Intervals Maximum in one or multiple recordings
Microphone (Type Free Field): ACO 7146 pre-polarized ½” condenser microphone, 50mV/Pa

datasheet