Features:

• Detects PM2.5 and formaldehyde particles with high accuracy.
• Output via PWM pulse-width modulation.
• High sensitivity with a minimum detectable particle size of 1 µm.
• Lightweight and compact design (approx. 25g).
• Wide operational temperature and humidity range for versatile applications.

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Description:
The SM181-APM PM2.5 dust sensor module is designed to detect fine particles, including PM2.5 and formaldehyde, with outstanding precision. Its PWM output ensures stable and accurate readings, making it ideal for air quality monitoring systems. With the capability to detect particles as small as 1 µm, it provides reliable results even in low-particle environments.

The module features a compact and lightweight design, measuring W59 × H45 × D17 mm and weighing just 25g, making it easy to integrate into various devices. Additionally, its wide operational range of temperature and humidity allows it to function effectively in diverse environmental conditions.

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FAQ:

1. What is the minimum particle size this sensor can detect?
   It can detect particles as small as 1 µm.

2. What is the output method of this module?
   The module uses PWM pulse-width modulation for output.

3. How long does it take to stabilize after powering on?
   The sensor stabilizes approximately 1 minute after power is connected.

4. What is the working voltage range for this module?
   The module operates at DC 5.0 ± 0.5 V.

5. Can this sensor function in high-humidity environments?
   Yes, it can operate in environments with up to 95% relative humidity.

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