The Fnirsi FDM01 noise meter is a versatile and compact decibel meter that enables precise noise level measurement in the range from 30 to 130 dB. It combines the function of sound level measurement with the simultaneous monitoring of temperature and humidity. Equipped with a highly sensitive 6 mm condenser microphone and a 2.3-inch VA colour display with backlight, the device offers a user-friendly interface. The rechargeable 600 mAh lithium battery can be conveniently charged via USB-C. With various measurement modes, including MIN/AVG/MAX and two detection modes (FAST/SLOW), the FDM01 is ideal for use in offices, construction sites, transport, production rooms and public areas. The robust design and effective noise isolation guarantee reliable measurements, even in the event of sudden volume peaks. Combined measurement of noise level, temperature and humidity. Fast response time with selectable measurement modes (FAST/SLOW). Highly sensitive 6 mm condenser microphone for precise results. 2.3-inch VA colour display with backlight for easy readability. Robust design with effective interference isolation for reliable measurements.