Model 407730 Version 1.3 June 2004
5
Specifications
Display LCD
with
bargraph
Microphone
0.5” (10mm) Electret condensor
Measurement Bandwidth
300Hz to 8KHz
Measurement Range
40 to 130dB (A wtg), 45 to 130dB (C wtg)
Frequency weighting
‘A’ and ‘C’ (selectable)
Accuracy / Resolution
± 2dB (under reference conditions) / 0.1dB
Response time
Fast: 125 milliseconds / Slow: 1 second
Calibration source
1KHz sine wave @ 94 or 114dB
AC output
0.707Vrms full scale
Power
4 AAA Batteries
Battery life
30 hours (typical); low battery indicator alerts user
Automatic power off
After approx. 20 minutes
Operating temperature
32 to 122
o
F (0 to 50
o
C)
Operating humidity
10 to 90% RH
Storage temperature
-4 to 140
o
F (-20 to 60
o
C)
Dimensions/weight
9 x 2.3 x 1.7” (230 x 57 x 44mm) / 6oz (172g)
Warranty
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects
in parts and workmanship for one year from date of shipment (a six month limited warranty
applies to sensors and cables). If it should become necessary to return the instrument for
service during or beyond the warranty period, contact the Customer Service Department at
(781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact
information. A Return Authorization (RA) number must be issued before any product is
returned to Extech. The sender is responsible for shipping charges, freight, insurance and
proper packaging to prevent damage in transit. This warranty does not apply to defects
resulting from action of the user such as misuse, improper wiring, operation outside of
specification, improper maintenance or repair, or unauthorized modification. Extech
specifically disclaims any implied warranties or merchantability or fitness for a specific
purpose and will not be liable for any direct, indirect, incidental or consequential damages.
Extech's total liability is limited to repair or replacement of the product. The warranty set
forth above is inclusive and no other warranty, whether written or oral, is expressed or
implied.
Calibration and Repair Services
Extech offers repair and calibration services
for the products we sell. Extech also
provides NIST certification for most products. Call the Customer Service Department for
information on calibration services available for this product. Extech recommends that
annual calibrations be performed to verify meter performance and accuracy.
