The Extech 407750 Sound Level Meter with PC Interface has a large backlit display, PC Interface and background sound absorber for noise measurements with high ambient noise levels. It features A/C Weighting, fast/slow response time, Min/Max, and analog AC/DC outputs for connection to a recorder.

*Auto/Manual ranging from 30 to 130dB in 6 ranges
*Meets ANSI and IEC Type 2 standards
*A and C selectable frequency weightings
*Fast and Slow selectable response times
*Background noise absorber mode for machine noise measurements filters ambient noise

Includes:

1 - Microphone Wind Screen
1 - 9V Battery
1 - Case