Extech 407727 Instruction Manual

User’s Manual
Model 407727 Digital Sound Level Meter
Introduction
Congratulations on your purchase of Extech’s Digital Sound Level Meter. This professional meter, with proper care, will provide years of safe reliable service.
Specifications
Measurement ranges Auto range from 40 to 130dB ('A' Weighted)
Resolution 0.1 dB Accuracy ±2 dB at 94 dB sound level Display 3 1/2 digit LCD with analog bargraph Display update rate 160ms (LCD), 40ms (bargraph) Time weighting Fast / Slow Response (selectable)
Frequency weighting Analog output
Microphone type Condenser Electret Power Meter powered by 9V battery ;120 hour battery life Dimensions/Weight 2.7x7.1x1.4" (68 x 180 x 36mm) / 5.1 oz. (160g)
Auto range from 45 to 130dB ('C' Weighted)
'A' and 'C' weighting (selectable)
AC: 0.707Vrms
Front Panel Description
1 Microphone 2 LCD Display 3 Analog Bargraph Display 4 ON/OFF key 5 Range key 6 A/C Weighting selection key 7 Min/Max Record key 8 Fast/Slow selection key 9 Maximum Hold activation key Note: Battery compartment and Tripod mount are on the rear of the meter.
The Analog output jack is located on the left side of the meter.
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