Maintains accuracy of a sound level meter
Fits microphones with a diameter of up to 1/2 inch
Two fixed sound level signals, 94 decibels (dB) and 114 dB
Output frequency of 1,000Hz
Meets European conformity (CE) directives and complies with American National Standards Institute (ANSI) and International Electrotechnical Commission (IEC) standards

Technical Details

Size (LWH): 6.9 inches, 3.6 inches, 2.6 inches
Product Details
Product Dimensions: 6.9 x 3.6 x 2.6 inches
Shipping Weight: 0.9 pounds (View shipping rates and policies)
ASIN : B0029XQAIW