> **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 VOC Sensor MQ138 (easyC)

**Type:** Product page · **SKU:** CE09916 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/soldered-electronics-voc-sensor-mq138-easyc.html ([markdown](https://core-electronics.com.au/soldered-electronics-voc-sensor-mq138-easyc.html.md))

Precise air quality monitoring. Ideal for detecting volatile organic compounds

## Pricing

- **Price:** $78.70 (inc GST) — $71.55 AUD, exc GST

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 17 and Aug 19.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE09916:1` (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/CE09916:1.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

The **Soldered Electronics VOC Sensor MQ138 (easyC)** is a high-precision air quality monitoring tool designed to detect volatile organic compounds (VOCs). This sensor is ideal for applications requiring accurate detection of VOCs in various environments.

### Key Features

- High sensitivity to VOCs
- Stable and long lifespan
- Easy integration with various platforms
- Compact design for versatile applications
 
### Specifications

 | Parameter | Value |
|---|---|
| Model | MQ138 |
| Detection Range | 5 - 500 ppm toluene, acetone, alcohol, hydrogen |
| Operating Voltage | 5V |
| Preheat Time | 24 hours |
| Dimensions | 32mm x 20mm x 22mm |

### Applications

This sensor is suitable for a variety of applications, including:

- Indoor air quality monitoring
- Industrial safety systems
- Environmental monitoring
- Smart home devices
 
### Integration and Usage

The MQ138 sensor can be easily integrated into your projects using the **easyC** platform. Its compact design and straightforward interface make it an excellent choice for both beginners and experienced developers looking to enhance their air quality monitoring systems.

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/C/E/CE09916-1.jpg)