FNIRSI FDM01 High Precision Digital Noise Decibel Meter

The FNIRSI FDM01 High Precision Digital Noise Decibel Meter is a compact and accurate handheld instrument designed to measure environmental sound levels quickly and reliably. It features a high sensitivity microphone and a clear digital display, allowing users to monitor noise levels in real time for workplaces, homes, and industrial environments.

With a measurement range of 30-130dB and ±1.5dB accuracy, the device provides dependable sound level readings for professional and everyday applications. The meter supports A weighting frequency response and offers FAST and SLOW measurement modes, enabling precise analysis of changing sound conditions.

Its ergonomic handheld design, rechargeable battery, and simple interface make the FDM01 an ideal portable solution for engineers, technicians, and DIY users who need reliable sound level monitoring.

Highlights:

• Wide measurement range from 30-130dB for environmental noise monitoring.
• High accuracy ±1.5dB for reliable sound measurements.
• FAST and SLOW response modes for different noise measurement scenarios.
• A weighting frequency response for accurate human perceived sound measurement.
• High sensitivity condenser microphone for precise sound detection.
• Large digital display with clear readings and overload indication.
• MAX hold function to capture peak noise levels.
• Built in rechargeable lithium battery with USB charging cable.
• Compact and ergonomic handheld design for easy operation.

Specifications:

General

• Model: FNIRSI FDM01.
• Display: Digital LCD, 4 digit display.
• Resolution: 0.1dB.
• Sampling Rate: 2 times/second.
• Microphone: 6mm condenser microphone.
• Working temper: 0-40℃, 10-80% RH.
• Battery: 600mAh, 3.7V rechargeable lithium battery.
• Charging: USB cable Type C.
• Color: Yellow.
• Dimensions: ~190×61×31mm.
• Weight: ~300g.

Sound Measurement

• Measuring Range: 30-130dB.
• Accuracy: ±1.5dB, 94dB @ 1kHz reference.
• Frequency Range: 31.5Hz - 8.5kHz.
• Frequency Weighting: A weighting.
• Response Modes: FAST / SLOW.
• Dynamic Range: 3.5dB.
• Overload Indicator: “OVER” / “UNDER” warning. 

Ideal For:

• 🔊 Noise level monitoring in workplaces.
• 🏭 Industrial environment sound measurement.
• 🏠 Home noise and appliance testing.
• 🔧 Audio equipment testing and troubleshooting.
• 📊 Environmental and safety inspections.
• 🎓 Educational and laboratory experiments.