FNIRSI FDM-02 Digital Sound Level Meter with Temp & Humidity

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FNIRSI FDM-02 Digital Sound Level Meter with Temp & Humidity The FNIRSI FDM-02 is a multifunction digital sound level meter that combines noise measurement, temperature monitoring, and humidity detection in a single portable device. Featuring a clear 2.0-inch color display, it provides real-time readings of environmental conditions, making it suitable for industrial inspections, workplace safety assessments, building acoustics, educational facilities, and home environments. The meter supports both A-weighting and C-weighting frequency measurements along with Fast and Slow response modes, allowing users to analyze different types of sound sources accurately. Its rechargeable battery, data hold function, alarm settings, and graphical trend display make it a practical tool for engineers, technicians, environmental inspectors, and DIY users who require reliable sound level monitoring. Features: FNIRSI FDM-02 Measures sound level, temperature, and humidity simultaneously. Large color TFT display with clear readings. A-weighting and C-weighting frequency modes. Fast and Slow response time selection. Real-time sound level monitoring. Graphical noise trend display. Data hold function. Adjustable alarm thresholds. Audible, visual, and vibration alerts. Rechargeable lithium battery. Portable handheld design. Automatic power-off function. Adjustable screen brightness. Suitable for indoor and outdoor measurements. Specifications: Parameter Value Screen 2.0‑inch TFT color screen Display 4‑digit number, resolution 0.1 dB 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 1500 mAh / 3.7 V lithium battery Dimensions 183 mm × 63 mm × 28 mm Applications: Workplace noise monitoring. Environmental noise assessment. Industrial safety inspections. School and classroom acoustic evaluation. Office noise measurements. HVAC system diagnostics. Machinery noise testing. Home theater calibration. Construction site monitoring. Research and educational projects. Package Included: 1 × FNIRSI FDM-02 Digital Sound Level Meter. 1 × USB Charging Cable. 1 × User Manual. 1 × Carrying Case. https://makerselectronics.com/wp-content/uploads/2026/06/MEASURE-SOUND-PRESSURE-LEVELS-ACCURATELY-with-FNIRSI-FDM-02-Rechargeable-dB-Meter-Robert-Veach-720p-h264.mp4