ATP AMT-911A Sound Level Meter with Temperature 
 
Product Description

The AMT-911A mini digital sound level meter has a wide dynamic range and gives virtually instant readings. It is ideal for quick and easy environmental sound level checks. It features an accuracy of ±2dB, a fixed 'A' frequency rating, and the choice of fast or slow time weightings. It also features the environmental temperature on its
Hi-Contrast Colour LCD display as well as min/max and data hold functions.

Sound Features
 
Single Measurement Range: 30 to 130dB
Hi-Range >100dB, Lo-Range <100dB
0.1dB Resolution
'A' Frequency Weighting
Fast 125ms, or Slow 1s time response weighting
Precision ½ inch electret condenser microphone
Lmax (LAFmax, LASmax)
Lmin (LAFMin LASmin)
 
General Specifications
30mm Colour LCD display with function indicators
Display updates every 300ms
Backlight for dark environments
Data hold
Max hold - displays highest measured value
Min hold - displays lowest measured value
Low battery indicator
Auto power off after 15 minutes of no activity (Can be user disabled)
 
Specifications
 
 
 
Sound
Temperature
Range
35 to 135dB
-20° to 70°C
Resolution
0.1dB
0.1°C
Accuracy
±2dB (94dB @ 1 Khz)
±1.5°C
Frequency Range
31.5Hz - 8Khz
 
Frequency Weightings
A
 
Time Weightings
Fast/Slow
 
Power
3 x 1.5V AAA Alkaline Batteries (LR-3)
 
Dimensions
144 x 56 x 31mm
 
Weight
73g