Conforms to ANSI S1.4-1984 and IEC 60942-2003 Class 2 standards for acoustical calibrators. Simply place the calibrator on to the digital sound meter's microphone, turn on the calibrator, and adjust the meter's reading to either 94 or 114 dB.

For compliance to the Noise at Work Regulations 1989 & relevant international standards, sound level meters must be calibrated before use & checked afterwards.

The Cen-Tek S326 Features:

94dB and 114dB Sound Calibration at 1KHz
Accurate and Simple to use
Fits 1 inch and 1/2 inch diameter microphones
9Volt Battery Included
Full instruction manual
Soft Case

S326 General Specifications:

Output Sound Pressure Levels 94dB and 114dB re 20 uPa under reference conditions.
Output Frequency 1000Hz +/-2%
Reference Conditions =
Temperature - 23 deg C(74 deg F)
Atmospheric Pressure- 1013 mbar (760mm of Hg)
Relative Humidity – 50%
Accuracy of Sound Pressure Level Under stated
reference environment conditions 0.5dB
Power One (1) 9V battery 006P or IEC 6F22 or NEDA 1604.
Battery Test - Internal circuitry checks condition of battery continuously.
Green LED – OK / Red LED Battery below acceptable voltage.
Calibrator will not operate at all if battery voltage falls below acceptable range.
Battery life: About 40 hours
CE Approved