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                                 - The SP - 235 is effective for information disclosure on site with digital display and alarm by rotary light.  
- Because the noise level is displayed at all times, the PR effect for the local residents is tremendous. 
- The instantaneous value of the noise level is displayed on a large digital display every one second. 
- When the regulation value is exceeded, the rotating lamp will operate. 
- Display MAXHOLD function available. The display can be stopped with the maximum value (can be released by the reset button) 
- Compact / weighing 
- All weather type and can be installed outdoors 
- I am using an ordinary sound level meter that passed the inspection of the measuring method inside. 
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