Voltcraft sl 100 digital sound level meter 31 5hz 8khz voltcraft dt 805l p this sound level detector is a digital meter for measuring the sound level in decibels db it has two ranges from 30 to 130 db once the values have been detected the momentary units functions are displayed digitally on a large lcd liquid crystal display the maximum value and the details shown on the display can both be stored p p the professional extensive features of this meter are virtually unbeatable f