Tecpel taipei, taiwan is providing a wide range of sound level meters.
dsl-330 sound level meter
dsl-331 programmable sound levle datalogger with rs-232
dsl-332 economic sound level mter
dsl-336 sound level calibrator

DSL-330: Features
4 Digit LCD display.
Max, Min Function.
Fast & slow dynamic characteristic models.
Level Range from 30 ~ 130dB.
Resolution 0.1dB update Cycle 0.5s.
Accuracy ±1.5dB.
A & C Frequency Weightings.
AC/DC Signal output.
Low Battery Indication.
Level Range: Lo = 30 ~ 80dB; Med Range = 50 ~ 100dB; Hi = 80 ~ 130dB
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DSL-332 Features:
4 Digit LCD display.
Max hold function.
Fast & slow dynamic characteristic models.
Level Range from 35 ~ 130dB.
Resolution 0.1dB, Accuracy ±1.5dB.
A & C Frequency Weightings.
AC/DC Signal output.
Low Battery Indication.
Reset Function.
Self-Calibration 94dB.