Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	Plantower 9103M
Detection Range	0-999 µg/m³
Particle Sizes	PM1.0, PM2.5, PM10
Communication Interface	UART / PWM
Operating Voltage	5V DC ±5%
Response Time	≤ 10 seconds
Compatibility	Xiaomi Air Purifier 3/4/Pro/Pro H
Sensor Principle	Laser Scattering
Dimensions	38 x 38 x 12 mm
Expected Lifespan	Approx. 20,000 hours

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Fast shipping and works great

Arrived well-packaged. Installed it in my Xiaomi Air Purifier 4 and it recognized it instantly. The PM2.5 numbers look realistic now.

Anonymous

Mar 31, 2026

Rating: 4/5

Good value, easy install

Installation took about 15 minutes. You need to be careful with the ribbon cable, but otherwise straightforward. Readings seem accurate compared to outside data.

Anonymous

Mar 23, 2026

Rating: 5/5

Restored my purifier's smart features

The auto mode wasn't working because the original sensor failed. This replacement brought all the smart features back to life. Highly recommended.

Anonymous

Mar 23, 2026

Rating: 4/5

Solid sensor module

Does exactly what it says. The laser scattering technology seems much more responsive than the older infrared sensors. One star off because the connector felt a bit tight.

Anonymous

Mar 21, 2026

Rating: 5/5

Perfect replacement for my Xiaomi Pro

My old sensor was giving erratic readings. This 9103M module fit perfectly and calibrated immediately. The air quality readings now match my standalone monitor.

Anonymous

Mar 20, 2026

Rating: 5/5

Saved me from buying a new purifier

I thought I needed a whole new unit, but it was just the sensor. This module is an exact match for the Pro H model. Very happy with the purchase.

5 FAQ

Q: Is this compatible with the original Xiaomi Air Purifier 2?

A: This module is specifically designed for models 3, 4, Pro, and Pro H. It is not guaranteed to work with the Air Purifier 2 due to different firmware and physical connectors.

Q: Can I use this for a DIY project with Arduino?

A: Yes, the 9103M supports UART communication which can be interfaced with Arduino or Raspberry Pi, though you may need to source the specific pinout diagram separately.

Q: How do I know if the sensor is faulty before buying?

A: Common signs include the purifier staying on high speed constantly, displaying error codes related to the laser sensor, or showing static PM2.5 values that do not change with air quality.

Q: What is the warranty period for this sensor?

A: This replacement part comes with a standard 6-month manufacturer warranty covering defects in materials and workmanship.

Q: Do I need to recalibrate the sensor after installation?

A: No manual calibration is required. The unit will perform a self-check and automatic calibration upon the first few power cycles of the air purifier.

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