Features:

• Free sensitivity
• Temperature and humidity detection
• Light alarm
• Mobile app intelligent linkage
• Conforms to International Committee IEC651TYPE2 and American International Standard ANSIS1.4TYPE2 standards
• Measurement range: 30dB-130dB
• Accuracy: ±1.5dB
• A-weighting responses, with fast and slow response rate selection
• "Automatic shutdown in 15 minutes" function
• Dual mode switching with adjustable sensitivity
• Diligently designed with attention to detail

Specifications:

• Model: FDM01
• Accuracy: ±1.5dB (Based on standard sound source, 94dB@1KHz)
• Frequency range: 31.5Hz-8.5KHz
• Dynamic range: 3.50dB
• Measuring range: 30-130dB
• Frequency weighting characteristics: A weight
• Digital display: 4 digits, resolution 0.1dB, sampling rate 2 times/second
• Dynamic scale display: 1 scale represents 2dB, and the sampling rate is 2 times/second
• Dynamic scale gear: 30-130dB
• Overload indication: "OVER" and "UNDER" symbols indication
• Dynamic characteristics: FAST (fast) and SLOW (slow) two response speeds.
• Microphone: 6mm condenser microphone
• Maximum value lock: MAX
• Battery: 600Mah/3.7V lithium battery
• Working temperature and humidity: 0℃-40℃, 10%-80%RH
• Storage temperature and humidity: -10℃-60℃, 10%-70%RH

DO you Know the Harm Caused by the noise pollution

• Dizziness and headache
• Insomina and  Dreaminess
• Absent-Minded
• Upset
• loss of Appetite
• memory Decline

Package Includes:

• 1 x FDMO1 Noise Decibel Meter
• 1 x Product Manual
• 1 x Packing Box
• 1 x Charging Cable