Extech 407732 Sound Level Meter with Backlit Display.

Type 2 Sound Meter
Sound Level Meter meets ANSI and IEC 651 Type 2 standards. Ideal for noise surveys in the workplace, installing fire alarms and speaker systems, and enforcing noise ordinances.

Additional Features
Measures from 35 to 130 dB in two ranges and has an accuracy of ±1.5 dB.Data Hold and Max Hold functions. Backlit display allows use in dimly lit areas.

What is a Sound Level Meter?
Sound level meters are instruments designed to respond to noise much like the human ear. The measurements taken by sound level meters are compared to known standards to determine if the noise level could have a detrimental effect on human hearing.

Types of Sound Level Meters

• Type 3 — Low cost models for basic sound checks.
• Type 2 — Models that meet OSHA and other ordinance testing requirements.
• Type 1 — Precision for lab testing (Extech doesn't have one).
• Dosimeters — Measure work noise exposure according to OSHA.
• Analyzer — analyzes noise in narrow bands.