The AET-958 is a data logging sound meter with 4 measurement ranges (3 manually selectable, 1 auto range). It offers selectable A or C frequency weightings and a choice of either fast or slow time weightings. The data logging feature can record up to 262,100 readings in one or multiple recordings it at intervals of 1 second to 10 hours. It is designed to match the accuracies required of IEC 61672:2013 at 1.4dB. Featuring a modern ergonomically designed grip, simple function buttons and a simple USB connection it is easy to use.4 User selectable measurement ranges30 to 80dB50 to 100dB80 to 130dB30 to 130dB (auto range)Over/Under range indicator1dB ResolutionSelectable A or C frequency weightingsFrequency Range 31.5hz to 8KhzSelectable fast (125ms) or slow (1s) time weightingsPrecision inch electret condenser microphoneLmax (LAFmax, LASmax, LCFmax, LCSmax)Lmin (LAFmin, LASmin, LCFmin, LCSmin)Data logging for 262,100 readingsSelectable sampling interval (1second to 10hours)55mm LCD display with bargraph and function indicatorsLCD display backlightData holdMax hold displays highest measured valueMin hold displays lowest measured valueUSB interface for real time transfer of readings to a PC4mm camera bush for tripod mountingLow battery indicatorAuto power off after 15 minutes of no activity (disabled when data logging)Supplied with hard carry case, wind muffler, 3.5mm earphone plug, USB cable (1m), software, AC/DC mains power adapter, battery and 2 year warranty
