description

sd card real time data recorder sound level meter, class 1
model : sl-4033sd
* real time data logger, save the data into the sd memory card and can be downloaded to the excel,
　extra software is no need.
* frequency and time weighting meet iec61672 class 1.
* auto range : 30 to 130 db.
* manual range : 3 ranges
　30 to 80 db, 50 to 100 db, 80 to 130 db.
* a/c frequency weighting.
* fast/slow time weighting.
* peak hold, data hold.
* record (max., min.).
* rs232/usb computer interface.
* optional wind shield ball, sb-01.
* patented.