MQ9 Carbon Monoxide, Methane and LPG Gas Sensor Module

SKU: R0247
Availability: In stock
Rs. 100.00 (Inclusive of 18% GST) No Hidden Charges
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MQ-9 Carbon Monoxide, Methane and LPG Gas Sensor Module

The MQ-9 gas sensor module has high sensitivity to Carbon Monoxide, Methane, and LPG. The sensitive material used in the MQ-9 gas sensor is SnO₂, which has lower conductivity in clean air. It detects gases by cycling high and low temperatures: at low temperatures (heated by 1.5V), it detects CO; at high temperatures (heated by 5.0V), it detects Methane, Propane, and other combustible gases while cleaning out previously adsorbed gases. MQ-9 is commonly applied in domestic gas leakage detectors, industrial gas detectors, and portable gas detectors.

Wire Connecting Method of MQ-9 Gas Sensor Module:-

  • VCC: Positive pole (5V)
  • GND: Negative pole
  • DO: TTL switch signal output
  • AO: Analog signal output

Specifications of MQ-9 Gas Sensor Module:-

  • Input Voltage: DC 5V
  • Power: 150mA
  • DO Output: TTL digital 0 and 1 (0.1V and 5V)
  • AO Output: 0.1–0.3V (relatively clean); highest concentration voltage is about 4V

Features of MQ-9 Gas Sensor Module:-

  • Suitable for home or factory gas leakage monitoring devices
  • Better sensitivity to Carbon Monoxide, Methane, and LPG
  • High-quality dual-panel design with power indicator and TTL signal output instructions
  • DO (TTL) output and AO (analog) signal output
  • TTL output valid signal is LOW (can directly trigger microcontroller or relay module)
  • Analog output voltage increases with gas concentration
  • Four screw holes for easy mounting
  • Long life, stable operation, fast response and recovery

* Product Images are shown for illustrative purposes only and may differ from actual product.

Return Policy Overview

At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.

Return Window

  • Standard Returns: 7 days from delivery date for any reason, including change of mind.
  • Defective / Damaged Items: 7 days from delivery date.
  • Manufacturing Defects (Warranty): 15 days from delivery, unless otherwise specified on the product page.

What Can Be Returned

Most items sold on ROBODIUM™ can be returned within the return window, including:

  • Items you no longer need or changed your mind about
  • Products received in damaged condition
  • Items with manufacturing defects
  • Wrong items received (item mismatch)
  • Missing components inside the package

Return Conditions

To be eligible for a return, items must be:

  • In their original, unused condition
  • In the original packaging with all accessories, manuals, and free gifts (if any)
  • Accompanied by proof of purchase

Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.

How to Initiate a Return

  1. Contact us via email at support@robodium.com or call +91 8123109966
  2. Provide your order number and reason for return
  3. Submit photos/videos of the item (mandatory for damaged or defective products)
  4. Our team will review and approve your request within 1–2 business days

Return Pickup Process

We arrange the return pickup for you — hassle-free returns similar to major e-commerce platforms.

  • Pickup is coordinated after return approval
  • Pack the product securely in its original packaging
  • Include a copy of the order confirmation or packing slip
  • Our logistics partner will collect the package at the scheduled time

Return Shipping Costs

  • Defective, damaged, or wrong items: ROBODIUM™ covers all return shipping costs.
  • Change-of-mind returns: ₹100 return shipping fee will be deducted from the refund.

Refund Process

  • Refund Method: Original payment method
  • Processing Time: 5–7 business days after inspection
  • Refund Amount: Full purchase price minus applicable return shipping fees
  • Orders canceled before shipping receive a full refund (minus up to 5% payment gateway charges, if applicable)

Replacements

  • Replacement is shipped after the returned item is inspected and approved
  • Dispatched within 2 business days of receiving the return
  • If replacement is unavailable, a full refund will be issued

Warranty Terms

All products include a minimum 15-day warranty against manufacturing defects, unless otherwise specified on the product page.

Warranty does not cover misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.

Order Cancellations

  • Orders in Pending or Payment Verification status can be canceled for a full refund
  • Contact us immediately before shipping to cancel an order
  • Once shipped, orders cannot be canceled but can be returned after delivery

Customer Service Commitment

  • Email response within 24 hours on business days
  • Phone support: Monday–Saturday, 10:00 AM – 6:00 PM IST
  • Return request review: 1–2 business days
  • Issue resolution within 48 hours of verification

Need Help?

📞 +91 8123109966
✉️ support@robodium.com

MQ9 Carbon Monoxide, Methane and LPG Gas Sensor Module

Vendor: ROBODIUM

MQ9 Carbon Monoxide, Methane and LPG Gas Sensor Module

Rs. 100.00

Vendor: ROBODIUM

MQ9 Carbon Monoxide, Methane and LPG Gas Sensor Module

Rs. 100.00