MQ-135 Air Quality Sensor Detection Module

MQ-135 air quality sensor module with digital and analog outputs for detecting NH3, NOx, alcohol, benzene, smoke and CO2.

✓Digital and analog output
✓Detects multiple gases
✓Adjustable digital sensitivity
✓5V TTL compatible
✓20 second preheat

●In StockSKU: AS-AEZ8H08T

💻 Product Overview

The MQ-135 is an air quality sensor module for detecting and measuring gases such as NH3, NOx, alcohol, benzene, smoke and CO2. It provides both a digital pin for simple gas detection without a microcontroller and an analog pin for measuring gas levels. Builders and electronics hobbyists can use it for air quality monitoring projects with common microcontrollers.

✨ Key Features

Dual output: Works as either a digital or analog sensor depending on the task.
Digital pin: Detects a particular gas without needing a microcontroller.
Analog pin: Enables measurement of gas levels in PPM.
Adjustable sensitivity: The digital pin threshold can be varied with the potentiometer.
Wide detection scope: Covers NH3, NOx, alcohol, benzene, smoke and CO2.
Fast response: Responds quickly with high sensitivity.

🇱🇧 Why Buy from Technodel?

🚚 Delivery Across Lebanon — 1-3 business days to all regions
🛡️ Warranty — as stated on this product page, plus 30-day returns with a full refund
💬 WhatsApp Support — ask us anything before or after you order
💵 Cash on Delivery — pay when the order reaches you

🛒 Frequently Bought Together

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❓ Common Questions

Real questions customers ask about this product — delivery, warranty, payments & compatibility.

Is this product available in Lebanon?▾

Yes — it is available at Technodel with delivery across all of Lebanon: same-day to Beirut, Sour, Tripoli and surroundings, and 1–2 days to every other region.

Where does Technodel source this product?▾

Technodel sources from established suppliers in Lebanon. The product page states its condition and its warranty, and compatible parts are labelled as compatible.

What warranty comes with this product?▾

Warranty terms are stated on each product page. Where a manufacturer warranty applies, warranty support is handled through Technodel.

How can I pay for this product?▾

Technodel accepts cash on delivery, Wish Money transfer, and cryptocurrency (USDT, BTC, ETH). Delivery is a flat $4 anywhere in Lebanon, free on orders of $500 or more.

What are the main specifications of this product?▾

The specifications table on this page lists the key details (model, capacity/speed, dimensions, connectivity and more). If you need a detail not listed, message us on WhatsApp and we'll confirm it for you.

Is this product suitable for my setup?▾

If you're unsure whether this fits your laptop, PC, console or network, send us a message with your setup and we'll confirm compatibility before you order.

Need another answer? Message us on WhatsApp +961 3 659 872 or read our FAQ.