> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Smart Dust Sensor - SM-PWM-01A (Seeed Studio)

**Type:** Product page · **SKU:** SS114990092 · **Brand:** [Seeed Studio](https://core-electronics.com.au/brands/seeed-studio-australia)
**Page:** https://core-electronics.com.au/smart-dust-sensor-sm-pwm-01a-seeed-studio.html ([markdown](https://core-electronics.com.au/smart-dust-sensor-sm-pwm-01a-seeed-studio.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

**Introduction:**

This is a dust sensor that detects the dust particle concentration in air by using optical sensing method. An infrared light emitting diode (IR LED) and a photo-sensor are optically arranged in the device. The photo-sensor detects the reflected IR LED light by dust particles in air.

The SMART Dust Sensor can detect the small particles like cigarette smoke and it can distinguish small particles like smoke from large house dust by pulse pattern of signal output.

**Features:**

- Compact size, light weight (about W59x H46x D18 mm, 23g)
- PWM (pulse width modulation) output (Low pulse output)
- Enable to distinguish small particle of cigarette smoke from large particle of house dust
- Constant forced air convection flow by heater resister in dust sensor
- Lead free and ROHS directive compliant
- Minimum particle size can be detected over 1μm
- (House dust size: avg 20μm, yellow dust size: avg 20um, cigarette dust size: avg 1μm)

**Specification:**

Datasheet

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/1/114990092_200.jpg)