General Tools DSM8922 Digital Sound Meter, with its background noise absorber, is a very efficient sound level meter. General Tools DSM8922 Digital Sound Meter is able to perform as an optimum noise level meter. Formerly Mannix Instrument.
Min-max record with max. hold
Fast or slow response time
A and C weighting selectable
Manual or automatic range
Background noise absorber
Jumbo 3-1/2 digit LCD display with bargraph
Meets IEC651, ANSI S1.4 type2 standards
Optional RS-232 interface and Windows® software available Model RS232KIT
Specifications:
General Tools DSM8922 Digital Sound Meter
Range
30 to 130 dB
Frequency range
31.5 Hz to 8 KHz
Accuracy
±1.5 db
Resolution
0.1 db
Sensor
0.25” electret condenser microphone
Power
1 “9-volt” battery (with DC 9V output)
LCD size
2.5” x 1.65”
Dimensions
11” x 3” x 1.5”
Weight
10.3 oz.
Supplied with
Hard case, Battery and Windscreen
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
