Low speed count input 0-150 counts/sec, min contact closure time 1 msec, min contact open time 5.5 msec; high speed count input 0-7.5k counts/sec, min contact closure time 20 usec, min contact open time 110 usec; 4 digit led display; 96-132 vac, 50/60 hz, 6 w; desk mtd, 5.6562 in. W, 2.4375 in. H, 10 in. D
