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 ranges
30 to 80dB
50 to 100dB
80 to 130dB
30 to 130dB (auto range)
Over/Under range indicator
1dB Resolution
Selectable ‘A’ or ‘C’ frequency weightings
Frequency Range 31.5hz to 8Khz
Selectable fast (125ms) or slow (1s) time weightings
Precision ½ inch electret condenser microphone
Lmax (LAFmax, LASmax, LCFmax, LCSmax)
Lmin (LAFmin, LASmin, LCFmin, LCSmin)
Data logging for 262,100 readings
Selectable sampling interval (1second to 10hours)
55mm LCD display with bargraph and function indicators
LCD display backlight
Data hold
Max hold – displays highest measured value
Min hold – displays lowest measured value
USB interface for real time transfer of readings to a PC
4mm camera bush for tripod mounting
Low battery indicator
Auto 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