... Sound Level Meter adopts 128×64 LCD display, menu operation,clock set, 24h clock display, auto-meter and store data functions. It can ... Weighting: A, C5.Time Weighting: F(Fast), S(Slow)6.Auto- Measuring: Leq,LAE,DL,Lmax,Ldn,Ld,Ln.7.Measuring ... : Y/M/D Hour:Minute:Second real time display9.Data Auto-Storage: 1000 groups in total, 64 groups of 24h time ...