NL Series -EX Option

Enhance your NL Series Meter

The -EX option enables continuous long-term measurement in Lp and Leq mode over user selectable statistical intervals.

The -EX option also enables communication via the unit's RS-232C serial interface as well as the comparator function, which allows the user to set a predetermined sound pressure level at which a voltage is output via the serial interface jack.

When you purchase an NL-42 or NL-52 with the -EX option pre-installed, a 512MB SD card is included to allow for long-term logging sessions.

The -EX option is required to be installed before any of the other following options (-RT, -WR, -FT, -RV)