> **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

# Soldered Electronics Air Quality Sensor MQ135 (easyC)

**Type:** Product page · **SKU:** CE09915 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/soldered-electronics-air-quality-sensor-mq135-easyc.html ([markdown](https://core-electronics.com.au/soldered-electronics-air-quality-sensor-mq135-easyc.html.md))

Measures: ammonia(NH3), CO2, alcohol, benzene, smoke

## Pricing

- **Price:** $19.95 (inc GST) — $18.14 AUD, exc GST
- **Quantity discounts:** 10+ $17.59 (exc GST) · 25+ $17.23 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE09915:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/CE09915:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **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

htmThe **Soldered Electronics Air Quality Sensor MQ135 (easyC)** is a versatile and reliable sensor designed to measure various air pollutants. This sensor is capable of detecting ammonia (NH3), carbon dioxide (CO2), alcohol, benzene, and smoke, making it an essential component for environmental monitoring and DIY electronics projects.

### Key Features

- Brand: Soldered Electronics
- Model: MQ135 (easyC)
- Detectable Gases: Ammonia (NH3), Carbon Dioxide (CO2), Alcohol, Benzene, Smoke
- High sensitivity and fast response time
- Easy integration with microcontrollers and development boards
 
### Specifications

 | Parameter | Value |
|---|---|
| Operating Voltage | 5V |
| Detectable Concentration | 10ppm-300ppm NH3 10ppm-1000ppm Benzene 10ppm-300p Alcohol |
| Preheat Time | 24 hours |
| Output | Digital |

This sensor is particularly useful for applications such as air quality monitoring systems, gas leak detection, and industrial safety systems. Its high sensitivity and fast response time ensure accurate and timely detection of harmful gases, providing critical data for maintaining a safe environment.

Integrating the MQ135 sensor into your projects is straightforward, thanks to its compatibility with various microcontrollers and development boards. Whether you're a hobbyist or a professional, this sensor offers reliable performance and ease of use.

**Documents**

- [Datasheet](https://core-electronics.com.au/attachments/uploads/MQ-135-datasheet.pdf)
- [Open source files](https://github.com/SolderedElectronics/Air-quality-sensor-MQ135-breakout-with-easyC-hardware-design)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/C/E/CE09915-1.jpg)