Specifications:
Screen: 2.0-inch TFT color screen
Display: 4-digit number, resolution 0.1dB
Frequency Weighting: A and C weighting modes
Time Weighting: FAST (125 milliseconds), SLOW (1 second)
Frequency Response: 31.5 Hz to 8.5 KHz
Dynamic Range: 3.50 dB
Accuracy: ±1.5 dB (Standard sound source, 94 dB @ 1 KHz)
Measurement Range: 30 dB to 130 dB
Alarm Record: Stores up to 30 records with high/low thresholds
Brightness Setting: Adjustable from 5% to 100% with 5% increments
Curve Interface Update: Every 0.5 seconds
Overload Indication: Overreporting and underreporting detection
Threshold Setting: Minimum 0.0 dB, Maximum 130.0 dB
Language Switching: Support (Chinese/English)
Style Mode: Year, month, day, time format
Date Clock: Adjustable hibernation brightness and time settings
Hibernation Setting: Auto shutdown adjustable from 1 to 60 minutes
Battery: Built-in 1500mAh / 3.7V lithium battery
Dimensions: 183mm x 63mm x 28mm

Features:
1.Precise Measurements in a Wide Range: The FNIRSI FDM02 delivers highly accurate readings within a measurement range of 30 dB to 130 dB, making it versatile for both quiet and loud environments.
2.Real-Time Data Retention & Curve Recording: Updates curve interfaces every 0.5 seconds for continuous tracking, ensuring reliable monitoring in dynamic soundscapes.
3.Customizable Brightness Settings: Adjust screen brightness between 5% to 100% for user comfort in any lighting environment, enabling long-term usability.
4.Dual A/C Frequency Weighting Modes: Supports both A and C weighting modes to meet diverse sound measurement standards for professional applications.
5.Portable Design with User-Friendly Features: Compact build with intuitive style modes, automatic shutdown, and dual-language switching for convenient operation in multiple scenarios.


Package Included:
1 x FNIRSI FDM02 Noise Meter
1 x USB Data Cable
1 x Storage Bag