Extech 407780A Soud Level Datalogger, Intergating with USB Interface

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4-digit multifunction LCD with analog bargraph
Precise linearity over wide range (100dB)
Display modes: SPL, SPL MIN/MAX, SEL, and Leq
Programmable integrating time
A and C Frequency weighting
Impulse/Fast/Slow response settings
Datalogging function records up to 32,000 records
Real time calendar/clock
Analog and alarm output features can be used to connect with Frequency analyzers, chart recorders, external dataloggers, and sound level alarms
Built-in USB interface with included Windows datalogging software
Tripod mount
Meets IEC 61672-1, 60651/60804 Type 2 and ANSI S1.4 Type 2 specifications