Fast and Slow Response Rates: Features both fast (125ms) and slow (1s) response rates, catering to different noise measurement needs based on environmental conditions. High Precision: Measures sound levels accurately from 30dB to 130dB with an impressive accuracy of ±2.0 dB, ensuring reliable readings for precise monitoring. Automatic Power Off: design with automatic power-off after 10 minutes of inactivity and a low battery indication for convenience and extended usage. Maximum Value Hold: Long press the MAX key to lock the maximum value during measurement, providing accurate readings of peak noise levels. Perfect for industrial noise control, neighborhood monitoring, audio calibration, and health and safety assessments.