The intuitive design of the Sound Detector makes it easy for users to measure sound levels and helps users determine the attenuation of hearing protection that may be required.
The integrating feature computes the average sound pressure level for more accurate assessment of the intermittent sound levels. When preset levels have been reached, LED indicators flash green, yellow and/or red to give a visual indicator of potentially hazardous noise levels.
The Sound Detector is a compact, lightweight sound level meter designed for measurement of workplace noise levels.




Tripod MountAccepts a ¼” – 20 screw (located on bottom, backside of the instrument)
BatteryLithium polymer (1000 mAh), rechargeable
Run-Time: 50+ hours without LEDs activated
Low battery indicator
MicrophoneOmni-directional; Class/Type 2; ½” diameter, electret condenser
Display Digits¾” (2 cm) with 0.1 dB resolution and 0.5 sec. update rate
Keypad5 keys including: F/S, A/C, Mode, Run/Stop and Power On/Of
ChargingUSB cable is provided to charge the instrument with a computer
StandardsANSI S1.4 1983 (R 2006) A NSI S1.43 1997(R 2007) IEC 61672-1 (2002) I EC 61010-1 (2010)
Displayed Data and Status IndicatorsSound Pressure Level (SPL), Average value (LEQ /LAVG), LED Alert (with Hearing Protection icon), Maximum value (MAX), Minimum value (MIN), Run-Time, Overload (OL), and Under-Range (UR)
Linearity Range45 to 130 dB (Dynamic Range)
WeightingA or C
Time ResponseFast or Slow
Exchange Rate (ER)3 dB or 5 dB
Storage Temperature-4 ºF to 158 ºF (-20 ºC to 70 ºC)
Storage Atm. Pressure50-150 kPA
Size6.5” x 2.4” x .9” (16.5 cm x 6.1 cm x 2.3 cm)
Weight4.4 oz (125 g) approx

+ Simple four-button navigation to perform all functions.
+ Comes ready to take measurements; no configuration necessary.
Industry Compliant
+ Meets applicable ANSI and IEC Class 2 standards.
+ Consistent performance with accurate, actionable readings.
Average Sound Pressure Level (LEQ/LAVG)
+ Integrating feature computes the average sound pressure level.
+ Provides stable readings where noise levels typically vary, for easier interpretation.
LED Alerts
+ Tri-color LEDs flash brightly when preset noise levels are reached. Helps user understand where hearing protection may need to be worn.
+ Green LED flashes when noise measurements are between 80 and 85 dB
+ Yellow LED flashes when noise measurements are between 85 and 105 dB
+ Red LED flashes when noise measurements are above 105 dB.
+ Lithium polymer battery provides up to 50 hours of use between charges.
+ Reduces the cost and hassle of replaceable batteries.
Operating Temperature32 ºF to 104 ºF (0 ºC to 40 ºC)
Operating Atm. Pressure80 -110 kPA
Relative Humidity0%- 90%, non-condensing
+ Construction
+ General Industry
+ Manufacturing
+ Power Generation
+ Transportation
Extra windscreen
USB cable for charging
Acoustical Class 1 Calibrator AC-300


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