Home > All Categories > Sound Level Meters >

Extech 407750 Sound Level Meter with PC Interface
407750 Sound Level Meter with PC Interface
Alternative Views:

Our Price: $335.49
Sale Price: $325.49
You save $10.00!

Availability:: Usually Ships in 24 to 48 Hours
Product Code: EXT-407750

NIST Certificate (Adds 10-12 weeks):



  • 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
  • Large 3 1/2 digit display with 0.1dB resolution with backlighting and analog bargraph
  • Electret condenser microphone provides 1.5dB accuracy
  • Min/Max plus analog output and tripod mount
  • Max Hold latches maximum value on display
  • RS-232 interface for capturing data directly on a PC, optional Windows compatible software
  • Complete with batteries and carrying case


  • Machine noise evaluation
  • OSHA compliance testing
  • Community noise measurement
  • Noise ordinance
  • PC interface for data collection


  • Digital Display: 3-1/2 digit (1999 count) Autorange LCD
  • Bargraph Display: 50dB display range (1dB resolution)
  • Measurement Range: 30 to 130dB (35 to 130dB for "C" weighting)
  • Resolution: 0.1dB
  • Accuracy: +/-1.5dB @ 94dB for a 1kHz sine wave
  • Microphone: Electret Condensor .24" (6mmdia.) type
  • Frequency Weighting: "A" and "C" type
  • Time Response: Slow/Fast
  • Sampling time: updates every 0.5 seconds
  • Measurement frequency range: 31.5Hz to 8KHz
  • Analog output: AC: 0.707Vrms (full scale); DC 10mVDC/dB
  • Applicable Standards: IEC 651 Type 2, ANSI S1.4 Type 2
  • Power Supply: 9V battery, optional AC adaptor
  • Dimensions: 10x3.1x1.5" (256x80x38mm)
  • Weight: 8.5oz (240g)

Download User's Manual

Download Sound Level Chart

Accessories for this product...
Extech 407752 Software and Cable for 407750 and 451104
Sale Price: $66.84

407752 Software and Cable for 407750 and 451104

Browse for more products in the same category as this item:

All Categories > Sound Level Meters
Manufacturers > Extech / Flir